Louisa, along with the wives and families of other Union officers chose to remain behind. They soon had misgivings, not for fear of the approaching rebel army so much as because the evacuation of territorial authorities had encouraged looters and other criminal elements. The Confederates who entered Santa Fe on March 10, 1862 were thus surprised to find a welcoming committee consisting of the wives of Union officers led by the wife of Colonel Canby. As expected, the Confederates established martial law and then conducted a mostly fruitlessly search for hidden supplies. On March 29, 1862 Confederate forces returned to Santa Fe from a Pyrrhic victory at Glorieta Pass. On their way to attack Fort Union, the Confederates had met a force made up predominantly of inexperienced Colorado volunteers. While the Confederates had won a technical victory, a unit of about 500 Coloradans had gone behind Confederate lines and destroyed more than 70 wagons loaded with Confederate food and gear. Without sufficient provisions to lay siege to Fort Union, the rebels had no alternative but to retreat.