Kraiss was a commander of the 90th Infantry Regiment (from September 1939 to March 1941), 168th Infantry Division (from July 1941 to March 1943) and 355th Infantry Division until May 1943.
Kraiss var kommendör för 90. infanteriregementet (september 1939 - mars 1941), 168. infanteridivisionen (juli 1941 - mars 1943) och 355. infanteridivisionen (fram till maj 1943).