I just won a 2 v 2 with US armor. It reminded me of Mechanized assault (Assgrens doctrine) as no teching is required. Assault engineer spam, rifles, M10, 105mm M4. Assault engineers do damage but kind of die like flies though.
I'm not sure if the infra red is worth getting. 120 muni (180 muni equivalent) is a fortune for losing the LMG and replacing 2 rifles with 2 x STG44 IR.