How did African Americans contribute to the war effort during World War I?​

While most African Americans serving at the beginning of WWII were assigned to non-combat units and relegated to service duties, such as supply, maintenance, and transportation, their work behind front lines was equally vital to the war effort.

Explanation:

Well Most Slaves back then Fought in the war so they wouldn't have to be a slave. To earn freedom. And also  by working in war plants that manufactured weapons and other materials needed by the U.S. Army.

Explanation:

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