Hi, I am stuck on act 3, I am not for sure of the title. I am a sniper and it's just me and one other guy. We are crawling through this field and all of a sudden like 5 tanks and 50 enemy soldiers pop up over the ridge. The enemy find up laying in the field and shoot us down. Then a screen pops up to and says, "Your actions caused your Captain to be killed." I don't know what I am doing wrong or what I am missing. Any help would be appreciated. Thanks.