The Center of Military History offers a wealth of information about the Army and other branches of the military. Start out by browsing artwork and photographs of military subjects. There are numerous images in each of the libraries.
Continue your tour with the online exhibits, such as this one on Asian-Pacific Americans in the U.S. Army. You'll also find full-text citations for Medals of Honor bestowed during conflicts from the Civil War to Somalia. Still want to learn more? Check out the reading list suggested by the Chief of Staff of the Army.