Confederate General Henry H. Sibley, in command…
February 1862 CE
In February 1862, Sibley advances northward from Fort Thorn up the valley of the Rio Grande, toward the territorial capital of Santa Fe and the Union storehouses at Fort Union.
Along the way, Sibley detaches fifty-four men to occupy Tucson.
The Confederate advance follows the west bank of the river via Fort Craig, which is garrisoned by a thirty-eight hundred-man Union force under Colonel Edward Canby.
Knowing he cannot leave such a large Union force behind him as he advances, Sibley attempts to lure the Union forces out into battle on favorable terms.
On February 19, Sibley camps at the sandhills east of the fort with the intention of cutting the Union lines of communications with Santa Fe.