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.

A Summary History of the 4th Infantry Division, whose motto is "Steadfast and Loyal," is a heavy mechanized division in the United States Regular Army. The 4th ID has a storied history from WWI, WWII, Vietnam, and Operation Iraqi Freedom. Arguably the most modernized division in the army, the 4ID is currently organized with four Brigade Combat Teams (BCT), a fires brigade, an aviation brigade, and various supporting units.

The 5th Infantry Division (Mechanized) is nicknamed the "Red Devils" or the "Red Diamond" for the simple design of its shoulder sleeve insignia. The 5th I.D., currently inactive, is a regular army division that saw service in WWI, WWII, Vietnam, and Operation Just Cause in Panama.

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 was never deployed overseas. The division proved to be an important asset during World War II, Vietnam, and the Cold War. During the pre-war buildup for World War II, the 9th Infantry Division was constituted on August 1, 1940, at Fort Bragg, NC. The Old Reliables were among the first U.S. troops to enter combat in WWII.

A summary history of the 3rd Infantry Division, nicknamed the "Rock of the Marne," is a mechanized infantry division of the United States Army based at Fort Stewart, Georgia. The unit has served the United States in World War I, World War II, Korea, the Cold War, and Iraq.