At the beginning of the mission,

we received a flanking attack on Japanese artillery positions to reach a crash site, two of our soldiers in the inspection, suddenly a grenade thrown, a dozen Japanese roar BANZI (Japanese long live) holding a bayonet 38 rifle to everyone rushed
(In the later levels of the U.S. Army you will hear BANZI, BANZI roar of Japanese troops rushing towards you, into a feature), you can press V for countermeasures according to the button prompt. After eliminating this wave of enemies continue to move forward. Arrived at a Japanese bunker, after a period of time, you can pick up the flamethrower of your fa