Fregattenkapitän Heinrich Lehmann-Willenbrock was a submarine commander in the Kriegsmarine of Nazi Germany during World War II. He commanded four U-boats, including U-96, a Type VIIC U-boat, which gained widespread recognition when one of its patrols was documented and publicized by an accompanying member of a propaganda company Lothar-Günther Buchheim. Lehmann-Willenbrock was awarded the Knight's Cross of the Iron Cross with Oak Leaves. The story of the U-96 was eventually made into a mini-series and film called Das Boot, in which the captain was portrayed by Jürgen Prochnow.
The 1st U-boat flotilla also known as the Weddigen flotilla, was the first operational U-boat unit in Nazi Germany's Kriegsmarine (navy). Founded on 27 September 1935 under the command of Fregattenkapitän Karl Dönitz, it was named in honor of Kapitänleutnant Otto Weddigen. Weddigen, a U-boat commander during World War I, died on 18 March 1915 after his submarine U-29 was rammed by the British battleship HMS Dreadnought in the North Sea.
The 7th U-boat Flotilla, also referred to as the Wegener Flotilla, was a combat unit within the Kriegsmarine, the naval warfare branch of Nazi Germany. It was the seventh operational flotilla focused on U-boat activities.
German submarine U-218 was a Type VIID mine-laying U-boat of Nazi Germany's Kriegsmarine during World War II.
German submarine U-953 was a Type VIIC U-boat of Nazi Germany's navy (Kriegsmarine) during World War II.
German submarine U-309 was a Type VIIC U-boat of the German Navy (Kriegsmarine) during World War II. The submarine was laid down on 24 January 1942 at the Flender Werke yard at Lübeck, launched on 5 December 1942, and commissioned on 27 January 1943 under the command of Oberleutnant zur See Hans-Gert Mahrholz. She sailed on nine combat patrols, but damaged only one ship, before being sunk off Scotland on 16 February 1945.
The 3rd U-boat Flotilla, also known as Lohs Flotilla, was the third operational U-boat unit in Nazi Germany's Kriegsmarine. Founded on 4 October 1937 under the command of Kapitänleutnant Hans Eckermann, it was named in honour of Oberleutnant zur See Johannes Lohs. Lohs, a U-boat commander during World War I, died on 14 August 1918 after his submarine UB-57 was sunk by a mine.
German submarine U-256 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II, she also served for a short time as an anti-aircraft submarine under the designation U-flak 2. During her career, U-256 completed five wartime patrols and sank one warship of 1,300 tons.
29th U-boat Flotilla was formed in December 1941 in La Spezia in Italy under the command of Korvettenkapitän Franz Becker. The flotilla operated mostly various marks of the Type VII U-boat and it concentrated its efforts mainly in the Mediterranean Sea, against convoys. In August 1943, the flotilla moved to Toulon, but did also have U-boats in Marseille and Salamis. The flotilla was disbanded in September 1944, when U-407 was sunk on September 19 and the two last flotilla boats U-565 and U-596 were scuttled in Salamis.
The 4th U-boat Flotilla was formed in May 1941 in Stettin under the command of Kapitänleutnant Werner Jacobsen. Nearly 300 boats received their basic training here. It was disbanded in May 1945.
The 6th U-boat Flotilla, also known as Hundius Flotilla, was a front-line unit of Nazi Germany's Kriegsmarine before and during World War II.
The 8th U-boat Flotilla was formed in June 1941 in Königsberg under the command of Kapitänleutnant Georg-Wilhelm Schulz, who also at this time commanded the 6th U-boat Flotilla in Danzig. It was primarily a training flotilla but in the last months of the war some flotilla boats were in combat against the Soviet Navy in the Baltic Sea. The flotilla was disbanded in January 1945.
German submarine U-377 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 8 April 1940 at the Howaldtswerke yard in Kiel, launched on 15 August 1941, and commissioned on 2 October 1941 under the command of Kapitänleutnant Otto Köhler.
The 12th U-boat Flotilla was a German U-boat flotilla formed on 15 October 1942 at Bordeaux under the command of Korvettenkapitän Klaus Scholtz. The flotilla was disbanded on 25 August 1944 due to the imminent arrival of Allied forces.
German submarine U-755 was a German Type VIIC submarine U-boat built for Nazi Germany's Kriegsmarine for service during World War II. Under the command of Kapitänleutnant Walter Göing. U-755 served with 9th U-boat Flotilla in the Atlantic, and later with 29th U-boat Flotilla operated in the Mediterranean Sea.
30th U-boat Flotilla of Nazi Germany's Kriegsmarine was formed in October 1942. Six U-boats reached the Black Sea after a transport over land and canals and operated from the harbours of Constanţa and Feodosiya from 1942 to 1944.
The 19th U-boat Flotilla was a unit of Nazi Germany's Kriegsmarine during World War II.
23rd U-boat Flotilla was a unit of Nazi Germany's Kriegsmarine during World War II.
24th U-boat Flotilla was a training flotilla ("Ausbildungsflottille") of Nazi Germany's Kriegsmarine during World War II.
27th U-boat Flotilla was a training flotilla ("Ausbildungsflottille") of Nazi Germany's Kriegsmarine during World War II.
Nazi Germany 
Kriegsmarine 
