Here are a series of tests concerning battlefield tactics, Recruit. To move on you have to demonstrate that you can think like a soldier.

a. Direct assault. If enough men charge quickly enough some of them will get close enough to attack it directly or to use grenades

b. Wait until some tanks become available and use them to attack it

c. Crawl forward towards the gun and eventually someone will get close enough to use a grenade

d. Attack from two flanks. As the gun sweeps one way, the squad on the other side advances. You will get to the gun in a series ofleapfrog moves on the left and right flanks.