Hitler was many things, but not a coward in the classic sense of the word. During WW1 he was awarded,
Iron Cross, First Class - 4 August 1918
Iron Cross, Second Class - 12 February 1915
Bavarian Cross of Military Merit, Third Class with Swords - 17 September 1917
Bavarian Medal of Military Service, Third Class - 25 August 1918
Regimental Diploma (Regiment "List") - 5 May 1918
Wound Badge in Black - 18 May 1918
Since Hitler denied God, he was a coward. Only weak, cowardly people are unable to face the reality of Almighty God. In fact, all atheists are cowards.
Please don’t defend Hitler. You look really dumb.