Luftwaffe is the german word for "air force", literary translated it means "air weapon". The Luftwaffe was the german air force during WWII. The modern german Air force is still under the name of Luftwaffe, unlike the army which switched from "Wehrmacht" to "Bundeswehr" (Federal Army).
Dude 1: Luftwaffe? What the hell is that a type of food?
Dude 2: Nein, scheiße Kopf. Sie ist das "Air force" von Deutschland.
Dude 1: What?