The involvement of the United States in World War II affected every aspect of the American way of life, the military wasn't the exception.
Race tensions were still high during this time period, and segregation still persisted in the military.
However with that in mind President Franklin D. Roosevelt issued the Executive Order 8802, the result of this order was ending racial discrimination stemming from the defense industry, this also saw the founding of the Fair Employment Practices Committee (FEPC) which would oversee to upkeep fair hiring practices.
These acts proved to be vital to show the American public that the Federal Government was willing to take a step in ending discrimination.
And finally, in 1948, the United States Government integrated all of its armed forces.