 In February 1863, shortly after the arrival of the Sibley Brigade in Louisiana, Captain Robert L. Swope resigned as commander of Company A.First Lieutenant James Henry Tevis took command, but was not promoted to the rank of Captain at the time.In April 1863, the Sibley Brigade including Herbert’s Arizona Battalion was among the men with which General Taylor confronted the Yankee army under General Nathaniel Banks at Fort Bisland, on the Bayou Teche.