Guard on June 21, 1916. His family background, education and expert horsemanship led to his being commissioned as a major in its 1st Cavalry Regiment. Two days earlier, President Woodrow Wilson had called the Illinois National Guard into federal service, along with those of several other states, to patrol the Mexican border during General John Joseph Pershing's Punitive Expedition. McCormick accompanied his regiment to the Mexican border. Soon after the United States entered the war, the entire Illinois National Guard was mobilized for federal service in Europe. McCormick thus became part of the U.S. Army on June 13, 1917, and was sent to France as an intelligence officer on the staff of General Pershing. Seeking more active service, he was assigned to an artillery school. By June 17, 1918, McCormick became a lieutenant colonel, and by September 5, 1918, was promoted to a full colonel in the field artillery. He took part in the capture of Cantigny (hence his later naming his farm estate near Wheaton, Illinois), and in the battles of Soissons, Saint-Mihiel, and the second phase of the Argonne. McCormick served in the 1st Battalion, 5th Field Artillery Regiment, with the 1st Infantry Division. His service ended on December 31, 1918, though he remained a part of the Officers Reserve Corps from October 8, 1919, to September 30, 1929. Cited for prompt action in battle, he received the Distinguished Service Medal, and was later always referred to as "Colonel McCormick." Crusading publisher McCormick returned from the war and took control of the Tribune in the 1920s. Given the lack of schools of journalism in the midwestern United States at the time, McCormick and Patterson sponsored a school named for their grandfather, the Joseph Medill School of Journalism. It was announced by Walter Dill Scott in November 1920, and began classes in 1921. As publisher of the Tribune, McCormick was involved in a number of legal disputes regarding freedom of the press that were handled by McCormick's longtime lawyer Weymouth Kirkland. The most famous of these cases is Near v. Minnesota, 283 U.S. 697 (1931), a case championed by McCormick in his role as chairman of the American Newspaper Publishers Association's Committee on Free Speech. A conservative Republican, McCormick was an opponent of President Franklin D. Roosevelt and compared the New Deal to Communism. For a period in 1935, he protested Rhode Island's Democratic judiciary by displaying a 47-star