The Navajo continue to raid despite the arrival of the U.S. Military in 1846.

General Stephen W. Kearny orders the Navajo to attend a council in Santa Fe in September 1846.

The Navajo do not show up.

Kearny sends a note to Col. Alexander William Doniphan, his second-in-command in Santa Fe, on October 2, to take all prisoners held by the Navajo and property which may have been stole from the inhabitants" of New Mexico.

On October 5, while on his way to California, Kearny stops in Socorro, New Mexico.

He writes a proclamation here that authorizes "all the inhabitants (Mexican & Pueblos) ...to form war parties, march into the country of their enemies, the Navajoes, to recover their property, to make reprisals and obtain redress for the many insults received from them. The old, the women and the children of the Navajoes must not be injured."

Kearny orders Doniphan to send a regiment of soldiers into Navajo country and secure a peace treaty with them.

A detachment of thirty men makes contact with the Navajo and speak to the Navajo Chief Narbona in mid-October.

The Bear Springs Treaty had quelled a large scale insurrection by the Ute, Zuni, Hopi, and Navajo tribes.

After the successful conquest of New Mexico, American troops move into modern-day northwest Mexico.

Alexander Doniphan’s force decimates a Mexican detachment about twenty-five miles north of Chihuahua at the Sacramento River crossing on February 28, 1847.

Colonel William Alexander Doniphan had occupied Chihuahua City on March 1, 1847.

British consul John Potts had not wanted to let Doniphan search Governor Trias's mansion, and had unsuccessfully asserted it was under British protection.

American merchants in Chihuahua want the American force to stay in order to protect their business.

Major William Gilpin advocates a march on Mexico City and persuades a majority of officers, but Doniphan subverts this plan.

Then in late April, Taylor orders the First Missouri Mounted Volunteers to leave Chihuahua and join him at Saltillo.

The American merchants either follow or return to Santa Fe.

The townspeople of Parras, located in the southern part of the Mexican state of Coahuila, enlist Doniphan's aid against a native raiding party that had taken children, horses, mules, and money.

The civilian population of northern Mexico offers little resistance to the American invasion, possibly because the country has already been devastated by Comanche and Apache raids.