USA Major (3 men) abilities:
-create retreat point
-artillery strike, 120 muni
-recon overflight, 50 muni
-Fake artillery strike, 20 muni
USA Lt. (5 men)
-grenade
-smoke rifle grenade
I don't think the Capt squad was shown.
Good thing is, fake artillery strike and real artillery strike can be distinguish easily. But, in the heat of the action, it might work.