The mid-nineteenth century was a tumultuous yet formative time for the Mesilla Valley, home to present-day Las Cruces, New Mexico. With the coming of the U.S. Army to Mexican territory in 1846, the region became the site of a continent-shaping power struggle between two rival nations.When Mexican governor Manuel Armijo unexpectedly fled Santa Fe, he left the New Mexico territory undefended, and it fell to forces under Brigadier General Stephen Watts Kearny in a bloodless occupation. In the ensuing two decades, the southern portion of New Mexico's Rio Grande Valley played a prominen