"Normandy exposed Eisenhower as an incompetent commander."
"Iwo Jima is a quagmire"
"Roosevelt the crippled Jew is fighting the war for his Wall Street buddies and the military-industrial complex so they can get rich and get the peoples' minds off the Depression."
You're probably correct. In fact, the Hollywood commies, who got their marching orders from Stalin, were ordered to not write any scripts critical of Hitler during the Soviet/Nazi non-aggression pact. Much pressure was put on Lillian Hellman (big-time commie) to keep her play Watch on the Rhine from being filmed. When she wrote it, the Russians and Nazis were at each other throats. Once the two countries made nice, the play became an embarrassment.
After Hitler invaded Russia, it became cool again to dis the Nazis.