Original sentence: Norway was occupied by German military forces and ruled by German civilian and military authorities jointly with Norwegian Fascist authorities (see Nasjonal Samling) starting when German forces invaded Norway on April 9, 1940 and ended on May 10, 1945, after the capitulation of German forces in Europe
Edited sentence: Starting with the invasion of April 9, 1940, Norway was under occupation and rule by the German military and a joint German and Norwegian Nazi regime.The legitimate Norwegian government came back into power on May 10, 1945, after the capitulation of German forces in Europe