Other mistake: The camera focus is on Lt. Weaver during the German armor attack, but off to his left (barely in the scene) Sgt. Duquesne drops a live rifle grenade as he is foolishly flipping them in the air before securing them to his rifle and firing them at the Germans.
Other mistake: One of General Grey's orderlies begins to leave the room before he even issues the order for the orderlies to vacate the room.
Other mistake: When Col. Kiley (Henry Fonda) shoots at Kessler with a M1 Garand, the rifle is missing the rear peep sight.
Answer: I believe that in the film, the men are repeatedly singing only the first verse. However, I have found the complete translation of all five verses and posted it here: "The Panzer Song (Panzerlied) " 1: Whether in storm or in snow /Whether the sun smiles on us/ The day blazing hot /Or the night ice cold/ Our faces are dusty/ But our spirits are cheerful /Yes, our spirits are cheerful/ Our tank roars Into the windstorm. 2: With thundering engines /As fast as lightning/ We engage the enemy/ Safe in our tanks/ Far ahead of our comrades /In battle we stand alone/ Yes, stand alone Into enemy territory. 3: If an enemy tank /Appears in our sight /We ram throttles full/ And close with the foe! /We give our lives freely /For the army of our realm/ Yes, the army of our realm/ To die for Germany Is our highest honour. 4: With barriers and tanks/ Our opponent tries to stop us /We laugh at his efforts/ And travel around them/And when the guns threatingly/ Hide in the yellow sand/ Yes, in the yellow sand/ We search for paths /No-one else has found. 5: And if some day /Faithless luck abandons us /And we can't return home/ The deadly bullet strikes/ And fate calls us /Yes, fate calls us /Then our tank is An honourable grave. Source: http://defence.pk/threads/german-ww2-and-pre-ww2-march-songs.146130.
Michael Albert