German field marshal, the Desert Fox, committed suicide 1944 (6)
I believe the answer is:
rommel
(Other definitions for rommel that I've seen before include "WW2 German commander known as the Desert Fox" , "German commander called The Desert Fox" , "German WW II field marshal" , "WW 2 Afrika Korps commander" , "Erwin --, WW2 German field marshal" .)