Palo Alto order of battle

The following units and commanders fought in the Battle of Palo Alto on May 8, 1846, during the Mexican–American War.

U.S. Army

Zachary Taylor

Unit type
Infantry	3rd U.S. Infantry 4th U.S. Infantry 5th U.S. Infantry 8th U.S. Infantry 2nd U.S. Artillery (battalion, serving as infantry)
Mounted units	2nd U.S. Dragoons
Artillery	Duncan's Battery (four 6-pounders) Ringgold's Battery (four 6-pounders) Heavy Battery (two 18-pounders)

Mexican Army

Mariano Arista

Brigade
Lancer Brigade (Torrejon - 700 men total)	7th Line Cavalry 8th Line Cavalry Light Cavalry Presidial Irregular Company Ranchero Irregular Company
Infantry	2nd Light Infantry 1st Line Infantry 6th Line Infantry 10th Line Infantry Tampico Coastal Guard Battalion 14 small cannon (4, 6, and 8-pounders)

Sources

• suite101.com/article/the-battle-of-palo-alto-may-8-1846-a310891 Military Suite 101 site