I always get a chuckle out of the accents these yanks sport!! They must be from Connecticut ot something! 
I couldn't tell you how troops of the WWII era were trained (I'll let Joe and Rocky do that!) but here's what we Marines learned. When under fire and moving from one prone position to the next, you get up and say, "I'm up, they see me, I'm down" and hit the deck. We move within 4 man fireteams rather than squads, but in WWII, I think the smallest organized unit was a squad. (Rocky, Joe can I get a witness?) As one FT member gets up and moves, the others lay down a base of fire to cover him, then the next man goes, and so forth. All three fireteams move individually but simultaneously and thus the squad moves in the direction of the enemy. In the Pacific I do think they were used, but I don't know to what extent. Wikipedia has some info on it here: http://en.wikipedia.org/wiki/Fireteam.
Once again, looks like fun Moose, glad you could get up to the top of the Hill!! What kind of AAA was that? WWII Ack Ack is not my strong suit, identification-wise.