 Most Denverites were from the North and their support for the Union drove many Southerners from town, including Denver's first mayor John C. Moore.William Gilpin, Colorado's first territorial governor, organized Colorado's volunteer militia, and sent them south in February 1862 to fight Confederate Texans at the Battle of Glorieta Pass.With resources tied up in the war there was little left over for mines, farms, and infrastructure, and Denver stagnated.