forces from the Confederate division of Maj. Gen. Jubal Early. Coster's brigade lost most of its 597 casualties in that action. The remainder of the brigade spent the next two days supporting batteries on Cemetery Hill. Howard commended Coster and other senior commanders by name for their courage and devotion to duty in his report on Gettysburg. After Gettysburg Later in 1863, Coster resigned his regimental command. On May 18, 1864, he was appointed a provost marshal for the State of New York to serve the Board of Enrollment. Coster resigned that position on April 30, 1865. Thereafter he lived in New York City. On February 28, 1882, he became a federal Pension Agent for the city, resigning effective December 1, 1885. He was also a member of the Grand Army of the Republic. Personal life In 1864, Coster was married to Marie Bay James (1841–1904), Marie was the daughter of Augustus J. James of Albany, and the niece of theologian Henry James Sr., which made Marie a first cousin of author Henry James, psychologist William James, and diarist Alice James. Together, Marie and Charles were the parents of four children, including: William Bay Coster (1867–1918), a banker. Coster died in New York City on December 23, 1888. He was buried on December 26, 1888. Memorials Coster Avenue, part of the Gettysburg Battlefield but within the town itself, has a brigade marker and three regimental monuments. A mural painting on the wall of a neighboring building commemorates the Confederate attack and Coster's defense. References External links 1837 births 1888 deaths Union Army colonels People of New York (state) in the American Civil War Year of birth unknown