 This battle occurred about thirty five miles south of Fort Craig, at the village of San Ygnacio de la Alamosa, familiarly known as Alamosa, near the confluence of Alamosa Creek with the Rio Grande.Alamosa was wrongly identified in Union Army reports as Canada Alamosa, the name later given to what is now present-day Monticello, New Mexico).Bethel Coopwood, the Confederate commander, correctly identified it as "Alamosa" in his report of September 29, 1861.