Axis infantry are basically fine but the 1919 Rifle blob is probably too strong, especially when they're backed by the Major and the Ambulance. The shortened retreat distance and the best healing in the game helps a lot.
Funnily enough, commandos get almost no real lethality buffs through veterancy.
Actually,they get none with the current bugged status.
they are charging very fast
they can cloak
the funny gammon bombs
they die pretty hard in yellow cover (in late game there is plenty yellow cover all around cause of mortar hits on the ground)