which war is this based off of and which part of the military. I was just wondering because my father is a Nam vet and he has a million vietnam stuff all over his house and he used to draw soldiers all the time when he was there and has a huge folder of them and he has a lot of violent drawings. . .this is something that brings light to the situations he recalls and I would love to purchase it for his birthday coming up. . .looking at it though it looks more like world war 1 with them being in a hole like that. anyway, just wondering. he was army special forces.