Later in 1844, the regiment, along with the Third Infantry, was transferred to Camp Salubrity near Natchitoches, Louisiana as part of Army of Observation under General Zachary Taylor. On March 8, 1845, Longstreet received a promotion to second lieutenant, and was transferred to the Eighth Infantry, stationed at Fort Marion in St. Augustine, Florida. He served for the month of August on court-martial duty in Pensacola. The regiment was then transferred to Corpus Christi, Texas, where he was reunited with the officers of the Third and Fourth Regiments, including Grant. The men passed the winter by staging plays.