 He also had only a week's warning before the launch of Case White at the start of 1943.Messenger argues that Rommel's attitude towards Hitler changed only after the Allied invasion of Normandy, when Rommel came to realise that the war could not be won.Historian Thomas Vogel opines that Rommel was not a Nazi, if one uses the definition the Nazis themselves used, considering that although he did everything in his power to make his country strong again, he showed no support towards the racial policies or other aspects of the regime.