When Indiana Jones broke into Castle Brunwald to rescue his father, this Prinicpal SS officer and two guards burst into the room and demanded the Grail diary. Following an argument between father and son, Jones knocked the officer backwards while steeling his gun and shot him along with the two guards behind him.
Behind the scenes
The Principal SS officer was played by Luke Hanson.
The SS officer was knocked to the wall and knocked out by Indy in the junior novelization