Jollasse took command of the 9th Panzer Division on 22 July 1943 and held it until he was wounded in October, he later resumed command in November and held it until 10 August 1944, when he was wounded again. In late 1944 he was declared fit for limited service and was given a desk job at the Inspectorate of Panzer Troops. In March 1945 he was named to replace Maj. Gen Rudolf Goltzsch as commander of the 344. Volksgrenadier Division in Czechoslovakia, a command he held until 30 April 1945, when he and twenty-five other men broke out of the Soviet encirclement and eluded the Red and US Armies until 8 June. He was released from prison on 30 June 1947 and died on 14 March 1987 in Tutzing.
Fellgiebel, Walther-Peer (2000) [First published 1986]. Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtteile [The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches] (in German). Friedberg, Germany: Podzun-Pallas. ISBN978-3-7909-0284-6.
Mitcham, Samuel W. Jr. 2008."Panzer Commanders of the Western Front:German Tank Generals in WWII". Mechanicsburg PA, USA.StackPole Books. ISBN978-0-8117-3507-0.
