USF struggles with many things, but AT is not one of them.
Pack Howitzer, Mortar, Ambulance, M8 Scott. These are the only four units in the USF nondoctrinal lineup that can't fill an AT role.
- Every USF infantry squad can be turned into an AT squad. REs are a very efficient option. If you use Riflemen you get an AT squad with snares.
- The .50 cal has Vet 0 AP ammo.
- The Utility Car drops teller mines and its crew has a bazooka.
- The AAHT's gun is armor-piercing and it beats 222s in a 1v1.
- The Captain can upgrade to a bazooka without the unlock.
- The M1 AT gun is an AT gun.
- The Stuart beats the Puma if it uses Shell Shock.
- The Sherman is a medium tank.
- The Jackson is one of the best tank destroyers in the game.
LOL if you think the AAHT is a good AT option and nothing you mentioned baseides the late game Jackson is really all that good at AT especially conpared to its Wehrmacht counterpart. You are really grasping at straws if you think the Stuart is any good vs a Puma or anything beyond a Luchs.