The 1st Armored Division, nicknamed "Old Ironsides," is the oldest and most recognizable armor division in the United States Army. It was the first tank unit to see combat in World War II. Old Ironsides is still serving America as part of III Corps, stationed at Fort Bliss in El Paso, Texas. This is a short history of the 1st Armored Division.

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.