When Indiana Jones broke into Castle Brunwald to rescue his father, this 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 into the wall, took his gun, and shot both guards. The officer was apparently knocked unconscious.
Behind the scenes
The SS officer was played by Luke Hanson.
Although seeming to simply be knocked unconscious after being knocked down in the film (as when Indy and Henry run from the room the officer is visibly breathing), the novelization of Indiana Jones and the Last Crusade specifically has him being shot along with the guards.
This officer has an action figure made by Hasbro, where he is referred to as a "German Officer."
His rank insignia would indicate that he is a Sturmbannführer (Major).