CDV of 6th US Cavalry "Apaches Wars" Soldier from Bangor, Maine

CDV of 6th US Cavalry "Apaches Wars" Soldier from Bangor, Maine. This CDV is believed to be William E. James of Bangor, Maine born 19 Sep 1853 he enlisted in the 6th US Cavalry Company A on 11 Oct 1875. He would serve for 5 years mustering out of service 10 Oct 1880. This CDV has a great inscription "Yours at Command" "Gen. Chamberlain" "Orderly". The CDV is backmarked Bangor, Maine   C. L. Marston's.
 
History on 6th US Cavalry,
On 9 January 1876, A and D Troops, posted at Fort Apache, were the first of the 6th Cavalry to engage the Apache. One Indian was killed, five were captured, and the others were driven away. In the spring and summer of 1876, the entire 6th Cavalry Regiment went into the field to move the Chiricahua onto the San Carlos Apache Indian Reservation. There was a small engagement on 10 April, but the majority of the Indians were moved onto reservation land. However, many of the warriors fled to the mountains and continued a guerrilla war from there.[2] The cavalry continued to occupy forts and patrol the Arizona Territory and fought recorded engagements against the Apache on 15 August, and 5 October 1876. In January 1877, LT John A. Rucker led a detachment of Troopers from Troops H and L overtook an Apache band in the Pyramid Mountains, New Mexico on 9 January 1877. They killed 10 Indians, and captured 1, along with their entire herd, weapons and ammunition supply, stolen goods from settlers, and $1,200 in Mexican silver.[2] Capt. Whitside and two Troops of the 6th Cav founded Fort Huachuca, SE of Tucson, in March 1877.
On 20 August 1877, several bands of renegade Apaches crossed into Arizona from Mexico, and elements of the 6th Cavalry were deployed to stop them. After tracking the war party through rough country bereft of water, the troopers found that the trail went into the land of the San Carlos Reservation. The detachment commander sent a telegram asking permission to enter the land, but the troopers were forced to act before a response was given. The Warm Springs Indians, or the Chíhéne, attempted a breakout from the reservation, and CPT Tupper led Troop G with elements of B, H, L, and M on a rapid pursuit. Between 9–10 September, a series of running gun battles left 12 Indians killed and 13 wounded, and the rest were returned to reservation land.[2] Smaller encounters happened on 13 and 18 December 1877, and 7 January and 5 April 1878. While patrolling near the Mexican border, a flash flood swept away LT Henely, so LT Rucker plunged in with his horse in order to save his classmate and friend, only to be swept away himself. The death by drowning of these two officers was universally lamented by the regiment, and by the people of Arizona, who knew them well.[2] The regiment continued to patrol the territory despite the loss of these officers, and engaged the Indians in minor battles until 1880.