Dumb move. They were making fun of their drill instructor who was probably all over them. So I dont think theres anything pro nazi in their intentions.
Kinda like, the wife is pushing you to do this, then do that, then do this. So you snap her a nazi salute to poke fun.
Humor that may have been acceptable years ago, but will now cost you your careers today. They probably should have known that.
These snowflakes that see nazi's at every turn would have jailed John Cleese for parody I guess.