The 99th New York Volunteer Infantry Regiment was a unit that served in the American Civil War from 1861 to 1865. Formed in 1861, it was composed of volunteers from New York and was part of the Union Army. The regiment participated in several significant battles, including the Battle of Gettysburg and the Battle of the Wilderness. Throughout its service, the 99th New York faced numerous challenges, including harsh conditions and heavy casualties. The regiment was known for its bravery and commitment, contributing to the overall efforts of the Union in preserving the nation. After the war, the regiment was mustered out in 1865.