The 2nd Cavalry can trace its lineage back to the early part of the 19th century. They’ve been named Dragoons, Armored Cavalry, and Stryker Cavalry. Despite the name changes, the Regiment has the distinction of being the longest continuously serving mounted unit in the United States Army.

Since 1974, the 101st Airborne Division has been the United States Army's "Air Assault" Division. The Division is capable of lifting, by helicopter, a 4,000-soldier combined arms force up to 150 kilometers behind enemy lines in one lift. Having approximately 281 helicopters, including three battalions of Apache attack helicopters, makes the "Screaming Eagles" the most versatile fighting unit in the Army.

The 9th Infantry Division of the U.S. Army is nicknamed the "Old Reliables." It was created during World War I as the 9th Division, but it was never deployed overseas. The division proved to be an important asset during World War II, Vietnam, and the Cold War.

History of the 2nd Marine Division. The 2nd Marine Division is an infantry division of the United States Marine Corps. The 2nd MarDiv serves the USMC as the ground maneuver element of the II Marine Expeditionary Force. The Marines of the second division have served their country with distinction during World War II, the Persian Gulf War, and now in the Global War on Terror. The 2nd Marine Division is stationed at Marine Corps Base Camp Lejeune in North Carolina.

The 1st Marine Division is the largest unit on active duty in the United States Marine Corps. Nicknamed "the Old Breed," or the "Blue Diamond," the 1st Marine Division is also the most decorated unit of its size in the USMC. The 1st Marine Division is the ground combat element of the I Marine Expeditionary Force (I MEF) and is stationed at Camp Pendleton in California.