If the question refers to the US Army, all units were segregated according to race. A white unit was all-white. A black unit had black enlisted and NCOs commanded by white officers, as did the Japanese-American 442nd Regiment. Racial segregation in the US Army did not end until the Truman Administration during the Korean War. In WW2, I think there was a small unit of American Indians from various tribes, part of the 101st Airborne division, but they were also segregated from the white soldiers.
The Indians were "Code Talkers". Only the Marine "Windtalkers" Navahos are really known, but the Army used individuals of different tribes for the same reason.
Mexican Americans
WAAC's (army) WAVES (navy)
No.
It was a major training area for Army and Navy units
32 not including ATS Womens units and Home Guard
Mexican Americans
A segregated army unit is a unit that is completely formed of a minority (such as African-Americans) and were formed during the Civil War used by the Union and during World War I and II (major wars). An example of a segregated army unit is the 54th Massachusetts Volunteer Infantry (white officers) and the 366th Infantry Regiment (with segregated officers).
17000
Segregated, non-combat support units.
Blacks had been serving in the US Army since the Civil War, but always in racially segregated units. As President, Harry S. Truman desegregated the Army by executive order, and thereafter blacks and whites served in units together.
The term "Jim Crow Army" is not commonly used or recognized. However, during the era of Jim Crow laws (late 19th to mid-20th century), the United States military was racially segregated. African Americans were typically assigned to segregated units and faced discrimination and unequal treatment. They were not fully integrated into the military until after World War II.
WWII created the US Army's airborne units.
WAAC's (army) WAVES (navy)
The volunteers were formed into segregated units with white officers.
african Americans would be kept segregated and serve mainly in non-combat units
No.
While elite units were in existence during the Second World War, the US Army Special Forces was not.