Yes he won in 1943 Can see other awards he got here. imdb.com/name/nm0000010/awards.
In 1943, James Cagney won an Oscar for Best Actor in a Leading Role for: Yankee Doodle Dandy (1942). He also had two other Oscar Nominations for Best Actor in a Leading Role for: Love Me or Leave Me (1955) and for Best Actor in a Leading Role for: Angels with Dirty Faces (1938). Throughout his career he had a total of 7 various wins and 3 other nominations.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.