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.

Anton "Toni" Hackl was a German Luftwaffe military aviator during World War II, a fighter ace credited with 192 enemy aircraft shot down in over 1,000 combat missions. The majority of his victories were claimed over the Eastern Front, with 87 claims over the Western Front. Of his 87 victories over the Western Allies, at least 32 were four-engined bombers, a further 24 victories were unconfirmed.