The next month, Baylor's cavalrymen under Bethel Coopwood, marched north from Camp Robledo along the Rio Grande and surprised a Union force of New Mexican militia cavalry in a small engagement west of the Rio Grande at the village of Canada Alamosa, ending with another Confederate victory and the capture of 25 men of that unit including its commander. The next day after disarming and paroling the captured New Mexican enlisted men, Coopwood retired southward along the west bank of the river with the two captured Union officers and an NCO to a camp 15 miles to the north of Fort Thorn. There a Union column of Mounted Infantry sent to relieve the New Mexican militia force caught up with Coopwood, and skirmished for a few hours with the Confederates until their ammunition was depleted, forcing the Mounted Infantry to retire northward to their base at Fort Craig.