The 153rd Cavalry Regiment is a military unit within the United States Army. Established as part of the Organization of the Army issued by Secretary of War Elihu Root in 1903, the regiment falls under the U.S. Army National Guard and serves in the Reconnaissance role. The regiment’s units are stationed throughout various states across the nation. The 153rd Cavalry Regiment primarily uses the Stryker vehicle for its reconnaissance missions. The unit has a rich history, participating in significant conflicts such as World War I, World War II, and more recently in Operation Iraqi Freedom and Operation Enduring Freedom.