Fourth United States Army The Fourth United States Army was a field army of the United States Army . History . It was organized as Fourth Army in the Organized Reserves in 1922 at New York City , NY . It was withdrawn from the Organized Reserves on 9 August 1932 and allotted to the Regular Army as an inactive unit . It was activated 1 October 1933 and headquartered at the Presidio of San Francisco , California . It was redesignated Fourth United States Army on 1 January 1957 . The Fourth United States Army has no combat record . It remained in the Continental United States during World War II , training tactical units to operate efficiently in combat . In addition , Fourth Army was largely responsible for the defense of the West Coast . During the 1960s , the Fourth Army operated " Tigerland , " an infantry training school at Louisiana ' s Fort Polk to prepare new recruits for infantry combat in Vietnam . In July 1971 , the Fourth Army was disbanded and consolidated with Fifth United States Army at Fort Sam Houston . Between 1984 and 1992 , Fort Sheridan served as the headquarters of the Fourth Army and U . S . Army Recruiting Command . During that time , Fort Sheridan was the headquarters for activities at 74 U . S . Army Reserve Centers located in northern Illinois , northwest Indiana , and the lower peninsula of Michigan . HQ Fourth US Army , was at " The Army ' s Biggest Little Post , " Fort Sheridan . The Fort was founded in 1887 , named for Gen . Philip H . Sheridan , Civil War Union cavalry leader and commanding general of the Army , 1883 – 1888 ; It is located on 695 acres on the shore of Lake Michigan , 29 miles north of Chicago loop . The post serves as an Administrative and Logistics Center for Midwest military installations . It was also home of the Army Recruiting Command , US Military Entrance Processing Command , 425th Trans Bde ( USAR ) , Army Readiness Grp . , 4th Recruiting Bde and Recruiting Bn , Chicago . Lieutenant General ( United States ) James R . Hall , served as the last commanding general of Fort Sheridan . In December 1988 , the BRAC Commission recommended closure of Fort Sheridan . The BRAC Commission also recommended relocation of the Headquarters , Fourth Army ; and the Headquarters , United States Army Recruiting Command to Fort Benjamin Harrison , Indiana . Distinctive Unit Insignia . The Distinctive Unit Insignia is a gold color metal and enamel device 1 3 / 16 inches ( 3 . 02 cm ) in height overall consisting of a red enamel square one angle up bearing a white enamel four - leaf clover with stem to base in front of and extending over a blue ( ultramarine ) enamel disc , between at top and in base arced gold motto scrolls , that at top crossing over the square in front of the angle , curving downward and terminating at the upper sides of the square , and that in base crossing over the square in front of the angle and terminating at the lower sides of the square , the scroll at the top inscribed " Leadership " and that in base " And Integrity " all in red enamel letters . The design was suggested by the shoulder sleeve insignia of the Fourth U . S . Army modified by the white four - leaf clover with stem being placed in front of and over a blue disc which alludes to the waters of the Pacific and Pacific Coast and the bluebonnet , the State flower of Texas . The distinctive unit insignia was originally authorized on 16 Jan 1969 . It was amended on 25 Sep 1969 to correct the symbolism of the design . References . History of the Fourth Army , Jack B . Beardwood , Washington , D . C . , 1946 ( N . P . Army Ground Force Study No . 18 )