History of the 1st Cavalry Division from 1833 to present. View photos and video footage of the 1st Cavalry Division during WWII, including images of the unit during horse-mounted expeditions into Mexican territory.

The history of the 1st Infantry Division, nicknamed "The Fighting First" or "The Big Red One" after its distinctive shoulder patch, is one of the richest in the United States Army. They have provided continuous service to the country since their organization in 1917.