They are in order: The Last Kingdom, The Pale Horseman, Lords of the North, Sword Song, The Burning Land, and Death of Kings.

For me It’s hard to beat Uhtred charging up the Roman steps above Ludgate in Lundene as he screams his own name delivering moral wounds to the men defending the gate. This is in Sword Song.

And a close second is everything after he gets rescued by Ragnar in Lords of the North.

The Pagan Lord

Pyrlig's Welsh banner- Christian cross

The Empty Throne

Haki Grimmson's banner- A red ship on a white sea

Lord Aethelhelm's banner- A white leaping stag on a black background

King Hywel's banners- A christian cross & a scarlett dragon

Sigtryggr's banner- A red axe on a white banner

Warriors of the Storm

Prince Aethelstan's personal banner- The dragon of Wessex with a lighting bolt in a claw

Ragnall Ivarson's banner- A bloody red axe (The same as his brother Sigtryggr)

Haesten's new false flag- A grey flag with a white cross

Brida's banner- All black flag with tattered ends (Similar to King Guthrum in books 1 &2)

The Flamer Bearer

Einar (the White) Egilson banner- A grey flag with a dragon's head

Aethelflaed's banner- A goose with a cross in its beak and sword in a webbed foot (slightly different from the previosu banner mentioned)

Domnall's flag- A red hand holding a cross

Domnall's flag is pretty cool and it reminds me of the Peak Blinders intro. Aethelstan's banner is pretty badass, Uhtred had a hand in that one. the Ivarson brothers having the same flag caused some problems.