I sometimes watch the 1960s series Combat! and there is a lot of German spoken on it. In one episode a supposedly dead German soldier is found by some of his comrades and as they assume he is dead and start walking away. The wounded soldier rises part way, holds his arm up and calls out, weakly, "Helfen Sie mir!" which is the formal address.
In an episode last week a german soldier comes out of the tent rubbing his head with a towel and he pauses and listens. His fellow soldier is splitting some wood. The soldier who came out of the tent asks the other, "Hörst du was?" and the soldier with the ax listens for a moment and replies "Nein!" Then, moments later they all hear the tank and the soldiers start calling out "Panzer!" and they knelt behind some head stones and started firing on the American tank crew. As expected, the American tank crew won the battle.
My question is why on the one episode a German soldier used the formal method of address to his peers and in the other the soldier used the familiar method of address? They were both talking to their peers but used different forms of address,
Can someone help?