Civil War Union Army Officer, Historian. After receiving a military education in Berlin, Germany, he attended college in England, graduating from the University of London in 1861. Upon the outbreak of the Civil War he enlisted as a Private in Company G of the 101st New York Volunteer Infantry, but soon was commissioned as 1st Lieutenant and Regimental Adjutant. The unit participated in the Spring 1862 Peninsular Campaign, the June Seven Days Battles, the September Battle of Chantilly, and the December 1862 Battle of Fredericksburg. After that battle the 101st New York was consolidated with the 37th New York Volunteer Infantry, and Theodore A. Dodge was assigned as regimental Adjutant for the 119th New York Infantry. He served with the unit at the Battles of Chancellorsville and Gettysburg. On the first day of the Battle of Gettysburg (July 1, 1863) his unit made up part of the Army of the Potomac’s XI Corps line north of the town. Here he received a wound in his leg that facilitated its amputation. Unable to serve in the field, he was transferred to the 23rd Veterans Reserve Corps, promoted to Major, and brevetted Colonel, US Volunteers. When the war ended, he was commissioned into the post-War Regular Army, becoming the Major of the 44th United States Regular Infantry. He served until he was retired in 1870 with a brevet of Lieutenant Colonel, US Regular Army. He then gained prominence as a military historian, publishing works such as “The Campaign of Chancellorsville” (1881), “A Bird's-Eye View of the Civil War” (1883), “Patroclus and Penelope: a Chat in the Saddle” (1885), and “Great Captains” (1889). His crowing achievement was his series of works, began in 1889, that involved twelve volumes entitled "History of the Art of War: Alexander, Hannibal, Caesar, Gustavus Adolphus, Napoleon". Subsequent later editions broke up the volumes into eight separate books. He died in Paris, France, at the age of 67.