A Bridge Too Far (1977)

Factual error: The shots of an air-strike on German artillery positions during the first armour encounter have used the Harvard aircraft (also known as T-6 Texans). However these were only used as advanced trainers by the Allied forces and never used in combat in the European theatre. One could assume from the theatrical paint jobs that the production team were attempting to disguise them as P47 Thunderbolts.

German Aide: Excuse me for interrupting, but ... British paratroopers have apparently landed. Three kilometers from here.
Field Marshal Model: Why should they do that? There's nothing valuable here. I! I am valuable here! They have all come to capture me!

Trivia: The Bridge in the film is not the one near Arnhem. It is a bridge over the river Ijsel near Deventer. This bridge stood in for Arnhem bridge as there was a car park adjacent to the bridge where a number of buildings were constructed for Col. Frost's epic stand. Also note the numerous modern traffic signs and roadmarkings.

Question: In the scene where the American 82nd Airborne is storming the river bank at Nijmegen, there is a brief shot of one of the German defenders, who looks quite startingly like a puberescent boy. Anyone know whether this assumption is correct, and if so, what's the background to this story?

Daniel4646