The Carlshof Institutions was a diaconal hospital in Carlshof, East Prussia. Founded in 1882, it was located about 3 km (1.9 mi) east of the town center of Rastenburg (Kętrzyn). Carlshof housed up to 1,500 inmates from all over East Prussia and specialized in treating patients with epilepsy and intellectual disability; it also cared for alcoholics, elderly, and juveniles as well as homeless persons. In World War II, Carlshof served as a military hospital and barracks for Hitler's nearby headquarters at the Wolf's Lair.

Rudolf Schmundt was a German officer and adjutant to Adolf Hitler. Between 1942 and 1944, he was chief of the German Army Personnel Office. Schmundt was injured during the 20 July 1944 assassination attempt on Hitler and died a few months later from his wounds.