Union Reinforcements in Cold Harbor, Day 1, Phase 1

[derpus.maximus]

Anyone else notice how useless VI Corps reinforcements are on Day 1/Phase 1 of Cold Harbor? Even if you double-quick them, they won't arrive at the trench line you're supposed to hold. Insta-lose.

[The Soldier]

Have you actually dismounted and put your cavalry in the Fortifications?  They can hold for a good long while.

[JonnyH13]

You can easily delay the CSA here with your cavalry, especially if you flank with them and use Custer to charge weakened brigades.  

[derpus.maximus]

It's winnable as long as the cavalry have ammunition.

Oh wait, the fifty bajillion ammo wagons that are in every other phase of the battle aren't there. 

Great.

[The Soldier]

Your cavalry have Spencer Carbines as their main weapon.  Insane rate of fire.  Yes, you run out of ammo quickly, but because the rate of fire is so incredibly fast, firing without ammunition is still insanely fast.