Joseph Alexander Cooper was an American soldier who commanded units at a battle fought on September 18–20, 1863 and was the first major battle of the war fought where? 
Joseph Alexander Cooper:  A Southern Unionist, he fought for the Union Army during the American Civil War, commanding units at Mill Springs, Stones River, Chickamauga, Franklin, Nashville, Bentonville, and in the Knoxville and Atlanta campaigns.
i don't know