 As the war progressed, more regiments were added to the brigade, but in keeping with its tradition, they were New Jersey units.In September 1862, the nine-month enlistment unit 23rd New Jersey Volunteer Infantry and the three-year 15th New Jersey Volunteer Infantry were added, with the 23rd New Jersey serving until June 1863 and the 15th New Jersey serving until the end of the war.On April 19, 1864, the 10th New Jersey Volunteer Infantry "Olden's Legion" was added.