View source for Mexican War, 1846 to 1848

== United States National Archives and Records Administration Records ==
*[https://catalog.archives.gov/id/10496479 War Department. Army of the West, 1846-1847. NARA Administrative History Note]
*[https://catalog.archives.gov/id/10535320  War Department. Army of Occupation, 4.13.1845-1848. NARA Administrative History Note]
*[https://catalog.archives.gov/id/1192538 Report of Troops of the Advance Center Division, 1846. NAID 1192538]
*[https://catalog.archives.gov/id/10462927 War Department. Military Department No. 9 (New Mexico) 11.3.1846-8.31.1848]
*[https://catalog.archives.gov/id/10510625 War Department. Military Department No. 10 (California, Oregon) 11.3.1846-5.17.1851]

=== Chronology of Major Events ===
{| class="wikitable"
! Date !! Event
|-
| 25 Apr 1846  || U.S. and Mexican forces clash at the Nueces River. The American forces were defeated.
|-
| 13 May 1846 || U.S. Congress declared war on Mexico
|-
| 8 May 1846  || The battle of Palo Alto occurred about eight miles northeast of Brownsville, Texas. U.S. forces, led by Major General Zachary Taylor, were victorious
|-
| 9 May 1846  || Taylor's forces defeated the Mexican Army in Cameron County, near Brownville, Texas
|-
| 22 Feb1847  || U.S. forces successfully defended possession of a narrow mountain pass near Buena Vista, in northeastern Mexico
|-
| 17 Apr 1847  || The Mexican Army under the leadership of Santa Ana, lost possession of a mountain pass, Cerro Gordo, near Jalapa,Mexico
|-
| 20 Aug 1847  || American forces overtook the village of Churubusco, six miles south of Mexico City
|-
| 12 Sep 1847  || General Scott led a successful attack against Chapultepec, a fortified hill guarding the gates of Mexico City
|-
| 14 Sep 1847  || American troops entered Mexico City
|-
| 2 Feb 1848  || The peace treaty was signed. Mexico gave the territories of California, New Mexico, and the Rio Grande region to the United States. 
|}