Battle of the Heligoland Bight (1939) but it produced co-operation difficulties. A solution to the problem was twofold. Fighter units defending the North Sea coast were subordinated to "Luftgaukommando" XI (Air District Command 9) in Hanover. These fighter units would function as an autonomous fighter command, or "Jagdfliegerführer" (Fighter Flyer Leaders). The command of Fighter Command unit was given to "Oberstleutnant" Carl-August Schumacher, a former commander of II./"Jagdgeschwader" 77. Schumacher had served in the "Kaiserliche Marine" (Imperial German Navy) during the First World War and as an officer cadet had seen combat at the Battle of Jutland. It was hoped with his naval background and easy
Battle of Jutland and deadlier, causing severe damage to the German battleships, particularly Rear-Admiral Behncke's leading 3rd Squadron (SMS "König", , "Markgraf", and all being hit, along with of the 1st Squadron), while on the British side, only the battleship was hit (twice, by but with little damage done). At 19:17, for the second time in less than an hour, Scheer turned his outnumbered and out-gunned fleet to the west using the "battle about turn" (German: "Gefechtskehrtwendung"), but this time it was executed only with difficulty, as the High Seas Fleet's lead squadrons began to lose formation under concentrated gunfire. To deter a