
One of these was passenger liner RMS Lusitania, which led to the United States' eventual entry into the war. Schwieger (1885–1917) commanded the U-14, U-20 and U-88, sinking 49 ships for a total of 183,883 GRT in 34 patrols. Rose commanded a U-boat training unit in 1940. Hans Rose (1885–1969) commanded U-53 between 1916–18, sinking 79 merchant ships for a total of 213,987 GRT, as well as the USS Jacob Jones, the first American destroyer to be lost during the war. In December 1947, he was sentenced to six years imprisonment in Landsberg Prison, but died two years into his sentence. In 1945, he was arrested and faced charges at the Flick Trial. Steinbrinck joined the Nazi Party in 1933, and became a member of the SS, rising to the rank of Brigadeführer, while remaining active in industry. After the war he worked in the iron and steel industry. Otto Steinbrinck (1888–1949) commanded several submarines during World War I, sinking a total of 231,614 GRT of shipping.


During World War II, Valentiner was commander of a unit inspecting new U-boats before commissioning.
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Branded a "war criminal" by the Allies for a series of incidents, including the sinking of SS Persia, Valentiner went into hiding for a while at the end of the war. Max Valentiner (1883–1949) commanded U-38 and U-157, and sank 150 ships for a total of 299,300 GRT. Forstmann served on the staff of the Kriegsmarine during World War II. In 1921 he qualified as an attorney and worked in the steel and coal industries, as well as being active in the German People's Party. Walther Forstmann (1883–1973) commanded U-12 and U-39 on 47 patrols and sank 146 ships for a total of 384,304 GRT. He was killed in February 1941 when his aircraft crashed on take off at Le Bourget Airport, Paris. After serving as an instructor in the Turkish Navy between 1932–38, he returned to the Kriegsmarine and during World War II served as naval commandant for western France with the rank of Vizeadmiral. He transferred to U-139 in May 1918 and sank a further five merchant ships, making 194 ships sunk totalling 453,716 GRT. Between 1915–18, he made 14 patrols in command of U-35, sinking 189 merchant vessels and two gunboats. Lothar von Arnauld de la Perière (1886–1941) was the most successful U-boat commander of World War I and of any submarine commander in history.

Top-scoring U-boat commanders of World War I Only sunk commercial vessels are included, not military ( warships) nor damaged ships. This list contains the most successful German U-boats commanders during the First World War based on total tonnage.
