Brother Against Brother - The Crittenden brothers - George (left) a general in the Confederate Army, Thomas, a general in the Union Army.
The American Civil War broke many families apart as individual family members followed the dictates of their own loyalties. (See "Battlefield Tragedy, 1862") This was particularly true in the Border States. Senator John J. Crittenden represented the state of Kentucky in the U.S. Congress. When war broke, his son George joined the Confederate Army while another, Thomas, joined the Union forces. Both became generals.