スポットシルバニア・コートハウスの戦い
Babcock was promoted to lieutenant colonel in the regular army on March 29, 1864 and became the aide-de-camp to Lieutenant General Ulysses S. Grant participating in Overland Campaign against General Robert E. Lee and the Confederate Army of Northern Virginia. Babcock served in the Battle of the Wilderness, the Battle of Spotsylvania Court House, and the Battle of Cold Harbor.