So the Nazis were literally defeated by diversity and inclusivity.

Well idk about literally, but it’s still a fair point.

https://www.nationalww2museum.org/war/articles/african-americans-fought-freedom-home-and-abroad-during-world-war-ii#:~:text=The Army%2C Navy%2C and Marine,South to command Black infantrymen.

More than one million African American men and women served in every branch of the US armed forces during World War II. In addition to battling the forces of Fascism abroad, these Americans also battled racism in the United States and in the US military. The Army, Navy, and Marine Corps all segregated African Americans into separate units because of the belief that they were not as capable as white service members. Adding to this indignity, the Army frequently assigned White officers from the American South to command Black infantrymen.

In spite of these dispiriting obstacles, African Americans fought with distinction in every theater of the war. Some of the more famous Black units included the 332nd Fighter Group, which shot down 112 enemy planes during the course of 179 bomber escort missions over Europe, and the 761st Tank Battalion, which served in General George S. Patton’s Third Army. Major General Willard S. Paul, of the 26th Division, singled out the 761st for special praise after its first action in France by writing, “I consider the 761st Tank Battalion to have entered combat with such conspicuous courage and success as to warrant special commendation.”