Henning von Holtzendorff

Henning von Holtzendorff
Admiral von Holtzendorff in 1918
Birth name	Henning Rudolf Adolf Karl von Holtzendorff
Born	(1853-01-09)9 January 1853 Berlin, Prussia
Died	7 June 1919(1919-06-07) (aged 66) Uckermark district, Weimar Republic
Allegiance	Prussia  North German Confederation  German Empire
Service/branch	North German Federal Navy  Imperial German Navy
Years of service	1869–1913 1915–1918
Rank	Großadmiral
Unit	West Africa Squadron East Asia Squadron Baltic Sea Naval Station
Commands held	Imperial Shipyard Danzig I Battle Squadron High Seas Fleet Imperial Admiralty Staff
Battles/wars	Franco-Prussian War Boxer Rebellion World War I
Awards	Order of the Black Eagle Pour le Mérite with oak leaves
Other work	Member of the House of Lords

Henning Rudolf Adolf Karl von Holtzendorff (9 January 1853 – 7 June 1919) was a German admiral during World War I, who became famous for his December 1916 memo about unrestricted submarine warfare against the United Kingdom. He was a recipient of Order of the Black Eagle and the Pour le Mérite with oak leaves and was one of just six Grand Admirals of the Imperial German Navy.