Complex sentence: The 332d Fighter Group was also known as being a sizable component of the famed Tuskegee Airmen, the first African American military aviators in the United States armed forces.
Split into simpler sentences: The 332d Fighter Group was also known as being a sizable component of the famed Tuskegee Airmen. The Tuskegee Airmen were the first African American military aviators in the United States armed forces.