Erich Johann Albert Raeder (24 April 1876 – 6 November 1960) was a naval leader in Germany before and during World War II. Raeder attained the highest possible naval rank—that of Großadmiral (Grand Admiral) — in 1939, becoming the first person to hold that rank since Alfred von Tirpitz. Raeder led the Kriegsmarine (German War Navy) for the first half of the war; he resigned in 1943 and was replaced by Karl Dönitz. He was sentenced to life in prison at the Nuremberg Trials, but was released early due to failing health. Raeder is also well known for dismissing Reinhard Heydrich from the Reichsmarine in April 1931 for "conduct unbecoming to an officer and a gentleman".