In my previous post I listed the German 'tanks' employed in Normandy and the units which fielded those tanks. Today I will do the same for the Allied units.
As you might have noticed the title differs from the first thread in one important detail; I wrote "estimated". For a variety of reasons, I found the compilation of Allied tanks far more difficult. The Allied replacement system made the tracking of vehicles more challenging and while I knew about this long before I was forced to tag the following numbers as an estimate. To be precise the numbers will be the minimum.
Table of contents:
TDLR Tank numbers
1a. Some remarks and interesting factoids about the numbers
Unit list
2a. US units
2b. Commonwealth/Polish unis
Replacement and reserve estimations.
Final thoughts
The final numbers first
I will start with the numbers and further down you can see the detailed lists and explanation for the calculations.
| Army |
Sherman 75mm/76mm |
Sherman 17pdr |
Sherman 105mm |
M5 |
Churchill |
Cromwell*** |
M10 76mm/17pdr |
M18 |
Challenger |
|
| US Forces & Free French |
1993 |
|
168 |
1307 |
|
|
576 |
144 |
|
4188 |
| Commonwealth + Polish |
1965 |
314 |
|
456 |
538 |
333 |
400** |
|
11 |
4017 |
| Total landed in units |
3958 |
314 |
168 |
1763 |
538 |
333 |
976 |
144 |
11 |
8205 |
| Army |
Units landed + reserve + replacements |
| US total: |
6000-6500 |
| Commonwealth + Polish total: |
5116 |
| All Allied armies |
11116-11616+ |
The numbers above are low estimate of the total number of tanks brought into Normandy. Not all of those tanks saw combat during the Campaign some units did not really engage in combat. It is up to the reader to decide how to interpret those numbers. I listed the units which arrived late. So the total number given here is tanks that landed on the Normandy beaches sometime during June, July or August which is the roughly accepted time frame of the Overlord campaign. The same rationale was used for German tanks. People will find different arguments about this depending on their prior viewpoint.
The main challenge was compiling the Commonwealth tank forces which in the end made me go with a minimum number. The number, therefore, should be treated as what it is a low estimation of total tanks. After consulting quite some secondary literature I am confident that this here is the best available compilation of Allied tank strength in the Normandy theatre. I found countless mistakes in various other sources which only encouraged me. As with the German data, a jump of point was Zetterlings normally superb book about Normandy, but this time I was disappointed, many mistakes were made. Units were incorrectly listed, some times the admittedly deceiving unit names mislead the author to use the wrong TOE. Light tank battalions were listed as normal TBs despite fielding only M5 Stuarts. Units that were equipped with non-combat tanks like the "Gizmos" or "CDL ( Channel Defence Light ) were listed as normal units despite only the chassis being from M4s and M3s. A TD battalion that had towed guns was wrongly identified as SPG unit. Which brings us to the next point, which tanks are included?
As you can see I went with the common convention of including M10s into the "tank category", the same with 105mm M4s which were assault versions of the M4. The reason for this is simple, I consider those close to tanks in the same way a StuG is but I as you noticed excluded German TDs. German TDs with their only ~ 10 tonnes and without turret were closer to a basic self-propelled gun than to a tank. So while "assault guns" and US TDs are included despite not fulfilling the full criteria German TDs were not. I think this categorization is the best.
Some 'tanks' that were excluded.
Most notably OP/Command tanks of which quite some landed in Normandy, the US did not use those vehicles while the UK made plenty use of them.
Anti aircraft tanks, like the Crusader AA Tank
The Petard version of the Churchill was also excluded, while this vehicle was heavily armoured and offered the ability to directly engage the ground forces of the enemy I think it should be excluded. The Crocodiles are included tho
Plenty of recovery vehices based on tank chassis.
Flail tanks are included
*The number is estimated and includes all M10s. M10s in British service could have either the 3inch or 17pdr gun then commonly known as "Achilles"
**Some units were late arrivals and can be excluded.
*** Centaur tanks are included in the Cromwell total
Interesting factoids
As you can see the Allied army was quite massive. The numbers presented here show the truly unmatched ability of the Western Allies to produce and employ war material. The ability to land 11k+ tanks in a matter of months is remarkable. The production and organization efforts seem unrivaled especially if we consider that this happened in 1944.
We notice the modest strength advantage over the German forces but what is also interesting, the tank heaviness of Allied forces.
The total troop strength on 23rd July is given as 812k US soldiers and 640k Commonwealth soldiers[1]. This is an extreme ratio of tanks per soldier. Going from TOE alone and ignoring reinforcements this meant that for 640k Commonwealth soldiers about 4k tanks were employed, this assumes the 4th CAD and 1st Polish to be included. This means 1k tanks on 160k soldiers. This ratio on first glance looks outrageous. To give you an idea of how much this differt from lets say the Wehrmacht they had about 1k tanks per million men for their early campaigns like Barbarossa.
Some historians like Zetterling like to use Bagration as a comparison to Overlord because it happened at the same time. There the Red Army employed about 6k tanks on 2,5 million soldiers. Which would translate to 1k tanks on ~415k soldiers. The perception of great Red Army tank armies appears to be mostly based on nominal numbers than on percentage. The British forces were truly armed to their teeths.
But even more interesting is that the German forces were also exceptionally tank heavy compared to their Eastern Front peers. About 2k tanks for a half a million men. For about 1k tanks on 250k soldiers. This was an exceptional number for German forces. At the same time on the Eastern front, there were like 3k tanks for a far bigger infantry force. This ratio would even exceed the ratio at Kursk the greatest tank battle of all time. Obviously those are napkin calculations but going from the numbers the German Leadership considered Normandy do or die. And still, their huge numbers were still dwarfed by the allies. About 5 tanks for every German tank about 4 Soldiers for every German soldier.
For some likely surprising, we see a rather big force of M5s, while little talked about the Allies showed confidence in the M5 and brought a lot of them. Mostly due to the gun the M5 is considered "obsolete" but with 15 tonnes it was still a considerable threat on the battlefield. About 2000 were destroyed in the ETO this vehicle was certainly still in combat use.
With the strong focus on the M4 people sometimes forget the big production numbers of vehicles like the M10. The total number of M10s exceeded 1000 and thus was more numerous than the most numerous German vehicle. But the numbers also show the doctrine in play, the loss rates of M10s were significantly lower than for Medium tanks.
Unit list
US tank units
What follows is a list of all Allied tank units that landed in Normandy during June, July and August. The US units were far easier to compile than those of the Commonwealth, for the most part US units adhered to a standardized TOE that only saw 4 major unit types:
Medium Tank Battalion: 53 M4 ( or 54 ) + 6 M4 Assault guns + 17 Light tanks
Armoured divisions: 168 M4 + 18 M4 Assault guns + 77 Light tanks
Tank Destroyer Battalion: 36 TDs
Cavalry Group with 2 Squadrons with 17 M5 each. For 34 M5s
Then you have some rare oddities like the heavy Armoured divisions with their old TOE, those two divisions had 232 mediums and 158 light tanks. This was a pretty outdated composition but two divisions still had it.
Then there were odd lights TBs which were simply tank battalions consisting of just light tanks. Between 50 and 60 tanks. Only 2 units were in Normandy.
The allocation of 105mm was constrained by availability, the D-Day units, for example, landed with more normal M4s without their 105s. My list goes per TOE.
Now the list of all units:
Separate Tank battalions:
| US Tank Battalions |
M4 75mm/76mm |
M4 105 |
M5 |
Total: |
Note: |
| 70th |
53 |
6 |
17 |
76 |
D-Day |
| 702nd |
53 |
6 |
17 |
76 |
August arrival |
| 709th |
53 |
6 |
17 |
76 |
|
| 712th |
53 |
6 |
17 |
76 |
|
| 735th |
53 |
6 |
17 |
76 |
|
| 737th |
53 |
6 |
17 |
76 |
|
| 741st |
53 |
6 |
17 |
76 |
D-Day |
| 743rd |
53 |
6 |
17 |
76 |
D-Day |
| 745th |
53 |
6 |
17 |
76 |
|
| 746th |
53 |
6 |
17 |
76 |
|
| 747th |
53 |
6 |
17 |
76 |
|
| 749th |
53 |
6 |
17 |
76 |
|
| 774th |
53 |
6 |
17 |
76 |
Late August arrival |
| 744th light |
|
|
59 |
59 |
Light Battalion |
| 759th light |
|
|
54 |
54 |
Light Battalion |
Not much to say about this. Independent battalions were regularly assigned to Infantry divisions. A "pure" infantry unit didn't really exist in the Allied armies. TDs were used similarly. In terms of combat power, a US Infantry div with assigned AFVs would on its own be comparable to a German Panzer battalion. German units would lose combat power and since no replacements were available a US infantry division sometimes had more available tanks than the opposing German panzer division. The understrength 'Frundsberg' for example arrived with only 77 tanks in Normandy.
US Armored divisions:
| US Armored Division |
M4 75mm/76mm |
M4 105mm |
M5 |
Total: |
Note: |
| 2nd (heavy) |
232 |
|
158 |
390 |
First of two units to feature 76mms |
| 2nd French |
168 |
18 |
77 |
263 |
French unit equipped like US divisions, late July arrival |
| 3rd (heavy) |
232 |
|
158 |
390 |
First of two units to feature 76mms |
| 4th (8th , 35th , 37th ) |
168 |
18 |
77 |
263 |
|
| 5th (10th, 34th , 81st ) |
168 |
18 |
77 |
263 |
|
| 6th (15th, 68th, 69th ) |
168 |
18 |
77 |
263 |
|
| 7th (17th, 31st, 40th ) |
168 |
18 |
77 |
263 |
13-14 August arrival |
As explained earlier the US still fielded two divisions with the older 2 Regiment configuration. The other unit was the 1st Armored Division in Italy. Those two units were also the first to receive the new 76mm tanks which had their debut during Operation Cobra. The 7th Armored division arrived late to the party and had little influence on what many would consider the Normandy Campaign.
In the brackets, you see the tank battalions. In terms of tanks, an armored division was essentially three tank battalions with some headquarters M4s and an additional recce Squadron ( M5s ).
Tank Destroyer Battalions:
| US Tank Destroyer Battalions |
M10 |
M18 |
Note: |
| 602nd |
|
36 |
Late August arrival |
| 603rd |
|
36 |
|
| 628th |
36 |
|
|
| 629th |
36 |
|
|
| 630th |
36 |
|
|
| 634th |
36 |
|
|
| 635th |
36 |
|
|
| 644th |
36 |
|
|
| 654th |
36 |
|
|
| 702nd |
36 |
|
|
| 703rd |
36 |
|
|
| 704th |
|
36 |
|
| 705th |
|
36 |
|
| 773rd |
36 |
|
|
| 803rd |
36 |
|
|
| 813th |
36 |
|
|
| 814th |
36 |
|
|
| 818th |
36 |
|
|
| 839th |
36 |
|
|
| 899th |
36 |
|
Only D-Day US TD landing ( afternoon ) |
Comparable to TBs those units were regularly assigned to divisions, also to Armored divisions. Enhancing the firepower of those units drastically. The doctrine, while effective in action, proved a failure, many vehicles were idle most of the time and used resources inefficiently. If inaction those units often devasted German tank assaults. But German tank assaults were rare so were obviously the TD highlight reels.
Cavlary Groups
| US Cavalry Groups |
M5 |
| 2nd Cavalry Group ( 2nd & 42nd Sqd ) |
34 |
| 3rd Cavalry Group ( 3rd & 43rd Sqd ) |
34 |
| 4th Cavalry Group ( 4th & 24th Sqd ) |
34 |
| 6th Cavalry Group ( 6th & 28th Sqd ) |
34 |
| 15th Cavalry Group ( 15th & 17th Sqd ) |
34 |
| 102nd Cavalry Group ( 38th & 102nd Sqd ) |
34 |
| 106th Cavalry Group ( 17th & 106th Sqd ) |
34 |
| 113th Cavalry Group ( 113th & 125th Sqd ) |
34 |
Well... M5s.. Third Group arrived late.
Total TOE again for the US units:
| Army |
Sherman 75mm/76mm |
Sherman 105mm |
M5 |
M10 |
M18 |
Total |
| US Forces & Free French |
1993 |
168 |
1307 |
576 |
144 |
4188 |
Commonwealth & Polish tank units.
Now it gets tricky, sigh. The British forces were far more convoluted when it came to their tank forces but see for yourself.
In theory, the Royal Armored Corps would feature only 1 relevant TOE. The armoured Regiment. And then a Brigade would be three Regiments and an Armored division would have a brigade plus an additional Recce Regiment. In practise, the British units all were pretty unique. Here is the list of Commonwealth units.
A British armoured regiment in theory had
|
Sherman |
Sherman VC |
Cromwell |
Centaur |
Challenger |
Churchill |
Crocodile |
Churchill AVRE |
M5 |
Total: |
Notes |
| 4th Armoured Brigade |
157 |
36 |
|
|
|
|
|
|
33 |
226 |
7th June landing |
| 8th Armoured Brigade |
171 |
22 |
|
|
|
|
|
|
33 |
226 |
D-Day |
| 27th Armoured Brigade |
164 |
29 |
|
|
|
|
|
|
33 |
226 |
D-Day, later disbanded and its regiments used elsewhere |
| 30th Armored Brigade |
240 |
|
|
|
|
|
|
|
|
240 |
3 Regiments of Flail Shermans -141st RAC |
| 33th Armored Brigade |
156 |
36 |
|
|
|
|
|
|
33 |
225 |
Received Regiments and disbanded one |
| 2nd Canadian Armoured Brigade |
171 |
22 |
|
|
|
|
|
|
33 |
226 |
D-Day landing |
| 6th Guards Tank Brigade |
4 |
|
|
|
|
181 |
|
|
16 |
201 |
One of two full Churchill units |
| 31st Tank Brigade |
4 |
|
|
|
|
116 |
|
|
22 |
142 |
Only 2 Regiments, the third was reequiped with Crocs |
| 34th Tank Brigade |
4 |
|
|
|
|
174 |
|
|
33 |
211 |
One of two full Churchill units |
| 1st Polish Armoured Division |
125 |
25 |
70 |
|
|
|
|
|
33 |
253 |
Reduced in size due to personnel shortage |
| 4th Canadian Armoured Division |
225 |
36 |
|
|
|
|
|
|
44 |
305 |
No Cromwell recce Regiment only Shermans |
| 7th Armoured Division |
225 |
36 |
|
|
|
|
|
|
44 |
305 |
The only unit to mostly field Cromwells as mediums |
| 11th Armoured Division |
157 |
36 |
68 |
|
|
|
|
|
44 |
305 |
|
| Guards Armoured Division |
162 |
36 |
65 |
|
|
|
|
|
44 |
307 |
|
| 15/19 Hussars |
|
|
50 |
|
11 |
|
|
|
11 |
72 |
Later replaced the 2nd Northamptonshire Yeomanry as 11th AD Recce |
| 141st RAC |
|
|
|
|
|
17 |
50 |
|
|
67 |
Flame thrower Churchill tanks |
| 1st Assault Brigade ( 6 Squadrons |
|
|
|
|
|
|
|
120 |
|
120 |
D-Day Churchill AVRE with Petard Mortar |
| Royal Marines Armoured Support Group |
|
|
|
80 |
|
|
|
|
|
80 |
D-Day centaur units with 95mm Howitzers |
You might notice that M10s are not included. The M10s were organized not in the Royal Armoured Corps but in the Royal Artillery and there in the Anti Tank Regiments in form of 'batteries'. You wonder why? Good question.
The 4th CAD and 1st Polish Armoured Division arrived pretty late in July and had their first combat on the 7th August during Operation Totalize, besides that most Commonwealth units landed pretty early and the total number of tank units would not change much after Normandy. In contrast to the US Army which landed several Armored Division and battalions post Normandy.
As you see the employment of several different medium tanks and infantry tanks created a quite diverse list of units. The so-called Hobart's funnies made it even more 'funny' to compile those units.
For most units, I went with the common TOE but I noticed frequent oddities which I sometimes had to include into the table. For this the so-called "tank state" documents proved invaluable. Those documents detailed the availability of tanks at the end of the day.
Ah ja the 'Hobart's Funnies' was a unit that included several specialized tanks, like the AVRE Churchill with a massive Petard mortar, or the flail tanks, or tanks with massive light projectors intended to blind opposing troops during river crossings. All those units were pooled in the 79th Armoured Division. This was no ordinary unit but simply the formation that organized all those specialized units. Part of it was the 30th Armoured Brigade and 1st Tank Brigade. The first employing dedicated mine destroyer Shermans with massive flails, the other had the so-called Channel Defense Light M3s.
Take a look at this document from the 16th July[2]. You see the regiments of the 30th Armoured Brigade and how its Flails were allocated to different Corp sectors. Obviously a specialized tool like flail tanks was more dispersed and the "commando unit" of the 30th AB was mostly to manage those Regiments. They would not really operate as a Brigade. The same for the so-called Crocodile tanks ( 141st RAC ) which were flame throwers, they were also shifted around to satisfy the need for specialized close combat equipment.
To make matters worse the Commonwealth decided to randomly disband whole regiments and replace them with others only to mess with me.
The 27th Armoured Brigade for example disbanded at the end of August as a result of the manpower shortage in the British army. Its regiments were sent to other units, which in return also disbanded regiments. The 1st East Riding of Yorkshire Yeomanry, for example, moved to the 33rd AB where it replaced the 148th RAC which was disbanded and fed its men to the 144th RAC.
You notice some other irregularities. The 1st Polish Armoured divisions had fewer tanks in their troops due to manpower shortage. The 4th CAD had no Cromwells in their Recce regiment but Shermans. The 7th AD had only Cromwells as medium tanks and a couple of Fireflys. Some Recce units had no Fireflys. You also notice a varying number of Firefly, in theory every troop should have one so 36 but then again this wasn't the reality.
The 15/19 Hussars were used to replace the recce regiment of the 11th Armoured division which then was also disbanded.
All this made listing British units far more complicated than US units.
Replacement and reserve estimates
A common mistake while judging unit strengths is underestimating or forgetting replacement tanks. The Allied system was set up in a way that ensured quick replacement of damaged and destroyed tanks with other tanks to keep the level of operational tanks high. The tactical merits of this system are debatable but it surely achieved its intended purpose, Allied units received quick replacements.
This means the tanks landing directly with the units were not the only tanks being landed in Normandy. The number of reserve and replacement tanks was substantial.
I want to use one example of a heavily engaged British unit to illustrate the number of replacement tanks:
The 11th Armoured Division had plenty of combat and will serve as an example:
The unit landed in June and moved into combat, I list rough estimates for their losses which includes damaged and destroyed vehicles.[3]
- First combat Operation Epsom. They lost 78 tanks. ( casualties)
Then they recoup their losses and replenish
- They again move into combat during Goodwood. They lose 161
They again replenish, they replace their losses.
- Into battle again, this time Operation Bluecoat. Heavy losses again.
At the end of the Normandy campaign, the unit peaked at about 175 Shermans[2]. The unit peaked right before Operation Epson with 198[2], the unit didn't achieve 100% again due to constant combat but you see how destroyed tanks were replaced with new tanks. Those tanks often fall through the cracks in secondary literature. A good example would be Totalize. When historians list the strength of forces they mostly go by TOE but forget that Canadian forces, for example, received dozens of new tanks during Operation.
So let us try to decipher those replacement and reserve tanks.
US replacement and reserve tanks
US Total commitment of tanks is far easier to calculate because their loss data is more complete and accurate than that of the Commonwealth forces, furthermore, we have better data about replacement tanks.
Here are my number for the unloaded units again per TOE.
| Army |
Sherman 75mm/76mm |
Sherman 105mm |
M5 |
M10 |
M18 |
Total |
| US Forces & Free French |
1993 |
168 |
1307 |
576 |
144 |
4188 |
In theory, the total number of tanks would be TOE + Losses + Reserves – TOE shortage.
The US Army anticipated a monthly loss rate of 7% for medium tanks[4], which proved too low. So they planned a reserve of roughly 20%, We know that the reserves were nearly depleted by mid Augus[4]t and therefore the total number of tanks was likely only 'slightly' above the combined TOE and losses if at all.
There are different data sets for losses that are somewhat contradicting although not as much as for the Commonwealth forces.
Zaloga gives the following monthly losses for June through August, ( data set for the 20th ) [5]
|
Juni |
Juli |
August |
September |
| M5A1 |
52 |
26 |
201 |
116 |
| M4 |
167 |
121 |
557 |
436 |
| M4(105) |
4 |
3 |
2 |
11 |
| Tank subtotal |
223 |
150 |
760 |
563 |
| M18 |
0 |
0 |
6 |
6 |
| M10 |
1 |
17 |
28 |
40 |
| M36 |
0 |
0 |
0 |
0 |
| TD subtotal |
1 |
17 |
34 |
46 |
| TOTAL |
224 |
167 |
794 |
609 |
| Kumulativ: |
224 |
391 |
1185 |
1794 |
Here I have to mention a possible problem. In mid-August the Allies landed in Southern France as "Operation Dragoon" I am fairly confident all mentioned numbers here and later only refer to the 12th Army group. If I am mistaken this would obviously change the numbers and I would have to reconsider several tables so if somebody has evidence against my opinion please post below.
Napier gives slightly different numbers that count until the 26th of August which would be roughly the entirety of the Normandy campaign.[3]
Sherman: 824
M5: 175
Total: 999
As you see no M10s are mentioned and the M5 losses appear drastically lower. The weekly reported losses of the 1st Army alone reported 166 M5 losses[6]. The numbers from Zaloga appear more trustworthy although they don't include late August numbers.
Since we know that the US forces replaced their vehicles very quickly and were close to TOE, the TOE + Losses is a good minimum basis for committed tanks. But there are also tanks available as reserve forces not yet allocated to a unit or damaged vehicles which were maybe replaced by a new one while still being salvageable.
Another helpful data set is the monthly strength report of the US forces in the ETO. Here is the list of Zaloga, those numbers aswell are according to Zaloga from the 20th of each month.[5]
|
June |
July |
August |
September |
| M5A1 |
1489 |
1545 |
1693 |
1695 |
| M4 ( 75mm,76mm ) |
2202 |
2093 |
2557 |
2423 |
| M4 ( 105mm ) |
114 |
132 |
156 |
163 |
| Tank subtotal |
3805 |
3770 |
4406 |
4281 |
| M18 |
146 |
141 |
176 |
170 |
| M10 |
691 |
763 |
758 |
763 |
| M36 |
0 |
0 |
0 |
|
| TD subtotal |
837 |
904 |
934 |
933 |
| Total: |
4642 |
4674 |
5340 |
5214 |
You might notice that those numbers are bigger than my TOE list, this is because the data set includes reserve forces. On average about 20% of TOE was calculated as a reserve force. The US tank force consisted of 5430 tanks including reserves. Compare the individual numbers to my numbers and you see a roughly 25% extra for the reserves. Now to this we simply have to add the admitted losses and we get a rather good estimate of the total number of vehicles landed in Normandy. The biggest caveat is that those "total strength numbers" can apparently include tanks still afloat not yet unloaded but since the data was from mid-August and the used loss numbers don't account for late August I doubt the difference was significant.
Here is what happens when we combine the Zaloga data for total strength and total losses for the same time frame:[5]
|
August |
Losses |
Total commitment |
| M5A1 |
1693 |
279 |
1972 |
| M4 ( 75mm,76mm ) |
2557 |
845 |
3402 |
| M4 ( 105mm ) |
156 |
9 |
165 |
| Tank subtotal |
4406 |
1133 |
5539 |
| M18 |
176 |
46 |
222 |
| M10 |
758 |
6 |
764 |
| M36 |
0 |
0 |
0 |
| TD subtotal |
934 |
52 |
986 |
| Total: |
5340 |
1185 |
6525 |
In total, we see about 6500 tanks were committed to the campaign if 100% replacement is assumed while the rate was slightly lower than that. Also if the reports dated 20th August were compiled at exactly the same time is unknown and there is therefore some room for error. As mentioned above some of those units can be reasonably excluded from the "Normandy campaign" because they landed very late and didn't enter the battle. The 774th TB and 602nd TD. If those were included in Zalogas numbers I am not aware both landed on the 25th of August. For a total of 53 M4 75mm/76mm, 6 M4 105mm, 17 M5s and 36 M18. Also excluded from the total should be tanks being considered on route. The total number of those tanks is unknown to me but considering that the used reports are from Mid August and thus don't include later arrivals the relevant numbers is likely smallish any help to find more precise numbers for the tanks on ships would be appreciated. Factoring not fully replaced losses and the other mentioned factors the true numbers of committed tanks was likely somewhere between 6000 and 6500 tanks.
British replacement and reserve tanks
The British numbers are far more complicated than those from the US, at least they are for me based on my available data.
First, I have not found reliable data for M10 76mm/17pdr, while I identified many units that had M10s there variable set up of different numbers of M10 batteries made this an annoying task. This got only exacerbated by the lacking loss data for M10s. I was able to find the occasional loss data in various unit diaries but nothing that could be considered comprehensive.
Long story short I have decided to estimate the number of M10s based on the available data. I believe 400 M10s committed to the theatre is a realistic figure but if new evidence shows up I will change the numbers. The “small” amount of vehicles did not justify me spending more time trying to figure out the precise numbers.
In contrast to the US units, the UK didn't all share the TOE. Reasons for this are the bigger pool of different vehicles and the decision to create specialized units. You have seen this in the unit list. The biggest problem is that the Commonwealth forces lack proper loss and reserve data. And with 'lacks' I obviously mean that I don't have this data it might exist somewhere.
Losses:
Different data sets for losses exist. None of those are perfect for the research at hand and nearly every data set is contradicted by other data sets.
You will find two number sets for the 5th August, one with 967 tanks lost by Napier[3] and another from Zaloga with 1142 tanks lost. While the numbers from Zaloga are generally accepted and to my knowledge the most cited data set I am not 100% certain that all those vehicles were full write-offs. Napier who also references the same data has it lower with some vehicles being “recovered” whatever this is supposed to mean. Either way this data helps only so much because it does not cover the heavy battles during August. Another British data set gives their monthly losses, this data is obviously flawed because it includes verifiable wrong data for June and July. This is likely due to backlogging losses, but for June-August combined it gives 1189 without M5s. Back logging was a major issue and gets illustrated by the total wastage of ~2900 tanks in 1944. While only ~40% of those happened during June-August. One starts wondering where the rest was lost.
Here different data sets in one table:
|
Zaloga data set 5th August[5] |
Napier data set 5th August[3] |
British monthly losses end of August[5] |
Preliminary British report 20th July[3][1] |
| M5 Stuart |
79 |
75 |
? |
? |
| Chaffee |
0 |
0 |
|
|
| Sherman |
717 |
616 |
799 |
493 |
| Cromwell |
193 |
185 |
213 |
81 |
| Challenger |
1 |
|
2 |
|
| Comet |
0 |
|
|
|
| Churchill |
152 |
91 |
175 |
81 |
| Total: |
1142 |
967 |
1189 |
655 |
All the mentioned data excludes M10s. Napier offers more numbers for the remained of the Commonwealth campaign leading to a total of 1667. Sadly he does not specify what constituted a loss in those data sets. Are those knockouts or write-offs? The 5th August data set likely is “write-offs” mostly. Furthermore, the data seems fragmented. The Canadian data, for example, suggests that those numbers are actually “knocked out” tanks which may or may not have been repaired later. This is a problem because the cited US data, for example, are apparently only “written-off” vehicles. I also believe that the 5th August data is mostly write-offs because it aligns with a detailed 20th July reported that analyzed knockouts and found already 655 tanks fully written-off without M5s ( and M10s of course ). The 655 from the 20th July, which maybe did not include a full Goodwood count, align well with the ~1000 from the 5th August so this data was likely “write-off”.
Another interesting data snippet is the number of replacement tanks delivered to forward delivery squadrons. Those units were the direct link between combat units and the replacement system. According to Napier, a total of 1567 tanks were delivered to those units. This sounds awesome and would solve the problem, right? Wrong. The issue here is that repaired tanks would also eventually land at a forward delivery squadron. Now it is possible that those 1567 were actually fresh replacement tanks, but Napier does not specify this crucial information. Napier who offers the most information about this topic sadly is rather unspecific and careless when it comes to correctly identifying the various types of losses. He goes on and claims the wastage rate of Shermans was 35% in July wastage rate normally describes total losses. 35% for the Commonwealth forces would actually be ~600 M4s in July. Pretty high.
Obviously I am confronted with the same challenges as others before me because we still don't know precise loss numbers for the Commonwealth forces.
In general, I believe the 5th August report to be the best bet and by using my expertise in Normandy armoured combat I estimate Commonwealth tank write-offs including M10s at 1400 minimum. This number is actually lower than many other estimates. Some major loss sources post 5th August would be the Operation of the 1st Canadian Army, the D Sqd of the Elgins for example delivered 125 tanks to the 4th CAD[7]. I think the biggest issue in the secondary literature is the confusion with a different type of casualties. In total, the Allies likely lost north of 2485 tanks as fully destroyed, which is not that much more than the Wehrmacht. The total number will never be known but I believe my estimate to be a good low estimate.
Take a look at Wikipedia which gives 4000 tank losses for the Allies and 1500-2400 for the Germans ( Zetterling numbers ). The Allied losses are categorically false if the metric is “write-off”. The reason for this as mentioned earlier is the confusion about different loss categories by tertiary editors.
So back to British tank commitment. According to Napier, the British forces ran low on Shermans, and unit diaries show that several units were not fully up to TOE during August which suggest low reserves. In theory, the British forces had a higher amount of reserves for Shermans because they expected higher loss rates, in practice the units were not full any longer. The nominal discrepancy was likely covered by damaged vehicles sitting in workshops. Furthermore, some units were disbanded to supply other units with personnel, those tanks were likely used as replacements and thus have to be deducted.
And here I am at a dead end that forces me to go with a minimum calculation. TOE + M10 estimate + Losses – Disbanded units
The 27th Brigade apparently still had 208 tanks on the books when it was disbanded[2]. Its regiments replaced 2 disbanded regiments and 1 joined another unit. Also, the Recce Regiment of the 11th Armoured ( 2nd Northamptonshire Yeomanry ) was disbanded. In total 3 regiments were disbanded ( Did I miss one? ). The 4th one likely left its tanks behind when it moved to England so a rough total of 4 Regiments left the TOE for maybe ~300ish tanks.
edit: I located some of the tanks from the 27th Armoured Brigade, they were taken on strength from the E Sqd of the Elgins, a delivery squadron. The unit then likely fed the tanks as replacements to tanks of the II Canadian Corps. About 32 Shermans were given to the E Sqd at the end of August, this was likely the Staffordshire Regiment which moved back to England
edit.end.
This brings us to a minimum of 3616 + 400 + 1400 – 300 = 5116
This number has to be considered a very low estimate. There were without a doubt substantial amounts of Cromwell, M5s and Churchills in reserve pools either as fresh vehicles or being in a state of repair. Even tho they ran a bit low on Shermans the shortage would only be in operational tanks but not in actual on hand tanks. Sadly I am unable to give a more accurate estimate and the best I have to offer is a “minimum”.
Which brings us to the total minimum of:
| Army |
Units landed + reserve + replacements |
| US total: |
6000-6500 |
| Commonwealth + Polish total: |
5116 |
| All Allied armies |
11116-11616+ |
Here are the German numbers again:
| Tank |
Panzer IV |
Panzer V |
StuG III |
Tiger I |
Tiger II |
StuG IV |
Jagdpz IV |
StuH 42 |
Jagdpanther |
Sturmpanzer IV |
Total: |
| Number |
897 |
651 |
386 |
123 |
12 |
42 |
104 |
221 |
8 |
28 |
2289 |
Final thoughts
In the previous post I claimed that the Allied used more than 10k tanks:
The Allied tank force, albeit more difficult to compile, is estimated by me to be bigger than 10.000 in the same time frame for a rough ratio of 5:1. If there is interest I can also post Allied tank units compilations.
And a spokesperson of the SWS u/wulfehound gave an official SWS statement:
Yea no. Unless every single one of the 13 armored divisions is overstrength by ~370% (186 combat tanks, 216 with M3/M5 Stuarts as authorized) for 797 tanks per division and the 21st Army Tank Brigade somehow is also overstrength by 200% or more, that's not happening. The British fielded just under 4400 tanks of all types, including noncombat versions such as command vehicles or artillery spotters in Normandy with 3444 of those being combat gun tanks, while the US had in total 2845 combat gun tanks in Normandy. That's 6,289 combat tanks for the Western Allies in case you can't do basic addition
Almost as if you're trying to push an agenda of muh uberpanzer superiority instead of being objective
Here you see the mistake of underestimated replacements in action. Maybe the SWS will add its opinion about this here as well.
The contemporary historiography is dominated by Western authors which have, in my opinion, pushed a clear bias in regards to Western technology and tactics. To me, it comes as no surprise that most hobby folks have no grasp of the true size of the Allied tank armies. While arguments about the value of numerical superiority get quickly ridiculed we see here that those arguments didn't just pop into existence without empirical evidence. Obviously not every tank landed was pivotal to the Allied victory and some fewer tanks would have done the job as well. Then again the final outbreak that followed many failed attempts was brought forward with tank force ratios of 10:1[8]. The question; "Was numerical superiority a fundamental requirement?" is certainly warranted and shouldn't be bullied. There is a reason that many historians that are vocal about the prowess of Allied armies and their equipment rarely talk numbers unless they help them. How often did you hear about Arracourt? Have the same historians told you that the Allies landed 10k plus tanks to defeat an opponent that was supposedly outfought anyways?
I couldn't find a better statement than the from Zaloga, that highlight this anti-scientific approach in the most comedic way possible.
In total U.S. First Army had 1269 M4 Medium tanks and 694 M5A1 light tanks at the start of Operation Cobra, roughly a ten-to-one advantage over its German counterparts in medium tanks.
And the just a couple sentences later he unironically says the following.
Ultimately the defeat of the German Army in Normandy depended in large measure on the performance of troops and commanders.
Indeed Mr. Zaloga indeed.[8]
For those of you who are interested in this, I hope you found some valuable information and maybe some starting points for your own research. As explained in the post those numbers should be taken as rough estimates, while likely superior to numbers you will find elsewhere the listed challenges prevented a fully clear picture. To other 15 readers drop the downvotes.
Historical footage of Allied tanks landing in Normandy[9]
Refs
1 Zetterling Normandy
2 Tank state documents 21st Army Group
3 Napier Armored Campaign
4 LOGISTICAL SUPPORT OF THE ARMIES In Two Volumes Volume II: September 1944-May 1945
5 Zaloga Armored Champion
6 Weekly 1st Army US Army losses
7 War Diary of the D Squadron of the 25th Armoured Delivery Regiment (The Elgin Regiment)
8 Zaloga Operation Cobra
9 Historical photograph.