"Sarah, my love for you is deathless. It seems to bind me to you with mighty cables that nothing but Omnipotence could break. And yet my love of Country comes over me like a strong wind and bears me irresistibly on with all those chains, to the battlefield."

— Union officer Sullivan Ballou, who died at the Battle of Bull Run 150 years ago today, in a letter to his wife dated July 14, 1861. More at Civil War 150.