Walther Dahl was a German pilot and a fighter ace during World War II. He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves of Nazi Germany. Dahl claimed some 128 enemy aircraft shot down in 678 missions.

Jagdgeschwader 300 was a Luftwaffe fighter-wing of World War II. JG 300 was formed on June 26, 1943 in Deelen as Stab/Versuchskommando Herrmann, from July 18, 1943 as Stab/JG Herrmann and finally renamed on August 20, 1943 to Stab/JG 300. Its first Geschwaderkommodore was Oberstleutnant Hajo Herrmann.