Simplify the following text for a Grade 7 native English-speaking person.
Original: Although his former unit , the 761st Tank Battalion , became the first black tank unit to see combat in World War II , Robinson 's court-martial proceedings prohibited him from being deployed overseas , thus he never saw combat action .
Simplified: Although his former unit , the 761st Tank Battalion , became the first black tank unit to see combat in World War II , Robinson 's court-martial stopped him from going with them . He never saw fighting action in the war .