The Naval Commandos were formed during World War II in Great Britain, modeled along with the British Commandos (who were founded in 1940). Its manpower came from the Fusiliers Marins.
By October 1944, the Commando Battalion had three companies. Kieffer led it during the attacks on Vlissingen and Walcheren to capture the port of Antwerp. He later took part in raids against occupied Dutch islands.