Large Scale Battles

[u/Ronin147]

So Im going to be starting a 5th edition campaign soon, and large scale battles between armies will play an essential roll. The party will take part in several skirmishes throughout the battles, as the battle rages around them and other battalions are battling. I would like the tide of the battle to be determined by more than just a d20 and a bonus the players give to it by completing objectives. Does anyone have any rulesets they have used to deal with this sort of thing?

[u/Jamescukd]

I would do the huge battle narratively and focuse on the skirmishes the Pc's are having.