Fort Bragg was the home of the Field Artillery at the onset of World War II. All the Army's artillery units east of the Mississippi River were based at the post, about 5,000 men in all. Soldiers tested the Army's new bantam car, which was soon to be known as the Jeep, although most of the power to move artillery still came from horses and burros. On September 12, 1940, the Army contracted to expand the post, bringing the 9th Infantry Division to Fort Bragg.