Indian bands continued to attack and raid settlements despite the military's presence. The fort itself was never attacked, however, the fort played an instrumental part in the suppression of a band of Mohuache Ute and
Jicarilla Apache Indians who attacked Fort Pueblo, located near modern-day
Pueblo, Colorado, on Christmas Day in 1854. Governor Meriwether granted the request and 500 volunteers were mustered into service on January 31, 1855. After scouts reported back, Colonel
Thomas T. Fauntleroy, appointed commander of the forces sent by Garland, ordered his men to pursue Chief Blanca and his forces. The Indians found themselves overwhelmed and a retreat was called. Col. Fauntleroy's forces pursued the Indians across the San Luis Valley for several days until the majority of the force were killed, or escaped. After chasing the Indian forces out of the San Luis Valley, Col. Fauntleroy ordered his forces back to Fort Massachusetts for a period of three weeks to rest. At the conclusion of three weeks, the Colonel split his forces up and sent half of them over the Sangre De Cristo range to campaign against Indian forces on the eastern plains, while the other half went north over Poncha Pass. The forces that went east were led by Lieutenant Colonel St. Vrain, and guided by Kit Carson. Forces led by Colonel Fauntleroy discovered a band of Ute Indians camped out near the modern-day town of
Salida, Colorado on the night of April 28, 1855. Upon daybreak, Col. Fauntleroy engaged the camp, and in a twenty-five minute battle, forty Utes were killed, and a large number of them were wounded. Only two of Fauntleroy's men were wounded in the engagement. After defeats in both the San Luis Valley and eastern plains, the Utes and Apaches were ready for peace. The Ute peace delegation met with Governor Meriwether near Abiquiu, New Mexico on September 10, 1855. Governor Meriwether and the Ute delegation made a treaty under which the Utes would forfeit all territory in the San Luis Valley, excluding a 1,000-square mile reservation west of the
Rio Grande River, and north of La Jara Creek. In addition, the Utes requested the United States pay an amount of $66,000, which was granted. The Apache delegation met with Governor Meriwether two days later on September 12, 1855, and made a similar treaty. The Apaches would forfeit all of their land excluding a 60,000-acre reservation, and requested a $36,000 payment. This ended the Indian campaign of 1855, which was the only large scale engagement that Fort Massachusetts played a role in. == Closure of the fort ==