yes but you need to keep 2 to 3 squads focused on shooting him only. It still takes too long and your opponent will simply back off, notice and come back with him. and you lost valuable MP and Time in this game. MG doesn't come into play after 3 minutes with USF, even so a player with a minimum of intelligence will not stand still in front of the machine gun with a light vehicle. he is fast, he has smoke, he gains a lot of HP with the upgrade and Vet. with 3 minutes USF there is absolutely nothing to stop you. Best of all, he's running after the retreating troops and killing them all.
Lieutenant gets zooks, seems like the best early response
So if you see 221 in his lineup, build less rifles and see what he does