Walter Grabmann was a German general in the Luftwaffe during World War II. He was also a recipient of the Knight's Cross of the Iron Cross of Nazi Germany. Grabmann was credited with 7 aerial victories during the Spanish Civil War claimed in 137 combat missions.

Jagdgruppe 88 (J/88) was a German Condor Legion fighter group serving in the Spanish Civil War. J/88 consisted of a headquarters (Stab) and four squadrons (Staffeln), although the 4th Staffel was short-lived. J/88 had formed on 3 November 1936.