But "not greeting" besides being unpolite and except the eternal law that members of the Luftwaffe never salute first if ever to members of the groundforces, no matter what rank: that is at best disrespectful behaviour. "
"Achtungsverletzung" means: Insult to dignity, which is one level above. The word btw I've never heard during 55 years in Germany.
Here we go: In contrary to the miliary criminal law from 1845 the military law now lets the charge of "Achtungsverletzung towards higher officers" as a a true insubordination paragraph preceed the rules for military obedience (§ 89 MStGB). The charge is fulfilled if the accused during service or by an action during service committs a violation of showing "the necessary due respect" towards higher ranks, by loudly complaining or by refusing to accept a reprehension". The violation of showing this "necessary due respect" during private life time or indeliberately during service time was a simple break of discipline and punished according to the service manual of the army.