Kampfgeschwader 77 was a Luftwaffe bomber wing during World War II. Its units participated on all of the major fronts in the European Theatre until its dissolution in 1944. It operated all three of the major German bomber types; the Dornier Do 17, Heinkel He 111 and the Junkers Ju 88.

Operation Rheinübung was the last sortie into the Atlantic by the new German battleship Bismarck and heavy cruiser Prinz Eugen on 18–27 May 1941, during World War II. This operation aimed to block Allied shipping to the United Kingdom as the previously successful Operation Berlin had done. After Bismarck had sunk HMS Hood during battle of the Denmark Strait, it culminated with the sinking of Bismarck, while Prinz Eugen escaped to port in occupied France. From that point on, Germans would rely only on U-boats to wage the Battle of the Atlantic.