During
World War I, McCormick served with the
First Division of the
United States Army—also known as the "Big Red One". McCormick provided an endowment for the
First Division Museum, which was designed by architect
Andrew Rebori. The museum has exhibits and artifacts chronicling the First Division's service history, not only in World War I, but also in
World War II and later U.S. wars. On display outside the museum is the area's largest collection of
tanks and
artillery pieces, known as "Tank Park". The collection includes tanks and armored vehicles from the First World War up to the present day. Visitors are allowed to climb on the vehicles. The museum's "Date with History" series features guest speakers on subjects of interest to the general public and military historians in particular. Speakers include historians, authors, filmmakers and veterans. The presentations are generally open to the public and free of charge. The museum is also home to the McCormick Research Center, for use by authors, scholars, teachers and students. The center's archives contain more than 10,000 works on military history, including secondary works on various battles, campaigns and wars. Included in the primary works are the bound battle records of the First Division in World War I, and the 1st Infantry Division's World War II battle records on microfilm. The center's Reading Room is open to the public. ==Public Gardens==