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 the Niemen River 23-25 Sept., the battle was evenly balanced. However, the flanking attack by Gen. Osinski's Suwalki Group, the 1st Legionary Division, and the 1st Lithuanian-Byelorussian Division from Sejny, took Druskienniki on 23 Sept. and cut the Soviet III Army's supply line at the Grodno-Wilno railway. The Polish cavalry reached Radun and then Lida. On 26 Sept., Gen. Krajowski's cavalry took Pinsk, cutting the Soviet IV Army's supply line. Tukhachevsky ordered a retreat. Battle of the Niemen River The Battle of the Niemen River was the second-greatest battle of the Polish–Soviet War. It took place near the middle Neman River between the