Editing Georg von Trapp (section)

===World War I===

On 17 April 1915, Trapp took command of {{ship|SM|U-5|Austria-Hungary|6}}. He conducted nine combat patrols in ''U-5'', and sank two enemy warships. One was the French armored cruiser {{ship|French cruiser|Léon Gambetta||2}}, sunk at {{Coord|39|30|N|18|15|E}} on 27 April 1915, {{convert|25|km|nmi mi|abbr=off}} south of Cape Santa Maria di Leuca. In hunting and sinking  ''Gambetta'', Trapp achieved a notable success as commander of the first-ever underwater nighttime (and only the second) submarine attack on a vessel in the Adriatic.<ref name="foundation_naval"/> Just over three months later, he sank the Italian submarine {{ship|Italian submarine|Nereide|1913|2}} at {{Coord|42|23|N|16|16|E}} on 5 August 1915, {{convert|250|m|yd}} off [[Palagruža|Pelagosa (Palagruža) Island]].<ref>von Trapp, p. 41.</ref> He also captured the Greek steamer ''Cefalonia'' off [[Durrës|Durazzo]] on 29 August 1915. Some sources incorrectly credit Trapp with sinking the Italian troop transport and [[armed merchant cruiser]] {{SS|Principe Umberto||2}},<ref>{{cite book |last1=Cummins |first1=C. Lyle |title=Diesels for the first stealth weapon : submarine power 1902-1945 |date=2007 |publisher=Carnot Press |location=Wilsonville, Oregon |isbn=9780917308062 |page=105 |quote=George Ritter von Trapp, of von Trapp Family Singers fame ... was also skipper when she torpedoed ... the loaded Italian troop transport ''Principe Umberto'' ...}}</ref> which resulted in the greatest loss of life in any submarine attack in World War I, but the ship was actually sunk by ''U-5'', commanded by Friedrich Schlosser.<ref>{{cite web |title=Linenschiffleutnant Friedrich Schlosser |url=https://www.uboat.net/wwi/men/commanders/533.html |website=uboat.net}}</ref>

Trapp was transferred to the {{ship|SM|U-14|Austria-Hungary|6}}, the former [[Curie (Q 87)|French submarine ''Curie'']], which had been sunk and salvaged by the Austro-Hungarian Navy.<ref>{{harvnb|von Trapp|2007|p=67}}</ref> He conducted ten more war patrols in the much larger submarine, attacking merchant ships instead of warships. Between April 1917 and October 1917, ''U-14'' sank 11 Allied merchant ships under Trapp's command.

In May 1918, he was promoted to [[Corvette captain|''Korvettenkapitän'']] (equal to [[lieutenant commander]]) and given command of the submarine base at [[Kotor|Cattaro]] in the [[Gulf of Kotor]]. However, Austria-Hungary's defeat in World War I led to the empire's collapse. The territory of the Austro-Hungarian Empire was divided among seven countries, with the [[Kingdom of Yugoslavia|Kingdom of Serbs, Croats and Slovenes]] keeping most of the seacoast. The [[Republic of German-Austria]] was landlocked and no longer had a navy, putting an end to Trapp's naval career.<ref name=salute/>