Original: Of the 2.5 million men who served in the Union Army during the war , approximately 9.5 % were African American , about 360,000 died -- in combat , from injuries sustained in combat , disease or other causes -- and 280,000 were wounded .
Simplified: Of the 2.5 million men who served in the Union Army during the war , about 9.5 % were African American , about 360,000 died from being hurt in battle , disease , and 280,000 were wounded .