Wilhelm Keitel and Alfred Jodl were both on the Allied Powers list of suspected war criminals, and as such, abrogated their right to accept or receive a salute. Besides, Keitel never saluted them. Watch the film of the surrender signing ceremony carefully. Instead of a salute, he curled his marshal's baton toward the group of sitting Allied generals. Also, this is something that you can barely make out from the footage, Keitel was not really in uniform. Generals are allowed to design their own uniforms, and the one Keitel wore that day was made of silk, strictly non-regulation, and finally, before the ceremony, a SHAEF protocol officer warned the German delegation NOT to wear ANY swastikas on their uniform except for a nazi eagle, but ONLY if it was embroidered onto the uniform, now a sewn patch. Keitel ignored that order and even wore his gold nazi party badge.