The Midshipmen's Training School was the largest of these programs and was established in the newly constructed Abbott Hall dormitory on the Chicago campus in 1940. This school graduated 25 classes of "90-day wonders" (a total of 26,750 ensigns) by the end of the war, including future President John F. Kennedy. Northwestern's medical and dental schools prepared 761 doctors and 478 dentists for Army and Navy service. Additionally, General Hospital No. 12 was reactivated by Drs. Michael L. Mason and J. Roscoe Miller in February 1942 and supported the North African campaign from December 1942 to December 1943 and Italian campaign until the September 1945. Northwestern medical personnel also supported Station Hospital No. 48 which served during the Guadalcanal Campaign.