Cavalry, which was accepted as a provisional unit of the Pennsylvania Army National Guard. In April 1917, the Boal Troop was reconfigured as an infantry unit, Company A of the 107th Machine Gun Battalion, and deployed to France for service in World War I. In 1919, soldiers of the Boal Troop returning from the war erected a monument on the Boal Estate dedicated to their fallen comrades. In the 1920s, other units of the 28th began erecting their own memorials, and began to refer to the area as a "shrine." In 1931, the Commonwealth of Pennsylvania purchased the site, and in 1969 the Pennsylvania Military Museum was opened. By 1971, memorials to most of the units of the 28th that served in World War I had been erected, and in 1997 a World War II memorial was dedicated at this site. Members of the 28th Infantry Division have gathered for a memorial service at the shrine every third Sunday in May since 1919. U.S. Route 322, on which the shrine is located, is named the Pennsylvania 28th Division Highway. Honors Campaign participation credit Unit decorations Heraldic items Shoulder sleeve insignia Description: A red Keystone. Symbolism: The keystone, symbol of the state of Pennsylvania, alludes to the nickname of the division. Background: The shoulder sleeve insignia was approved on 19 October 1918. TIOH Drawing. No. A-1-231 Distinctive unit insignia Description: On a gold disk divided per pairle reversed Gules, Argent and Azure, the crest from the National Guard of the State of Pennsylvania. Symbolism: Purportedly, the device was designed by Benjamin Franklin, who aroused the people of Philadelphia. The shield on the device is that of William Penn, while the colors of the wreath, red and white, denote the predominantly English origin of the early settlements. Background: The distinctive unit insignia was originally authorized for the 28th Infantry Division Headquarters; Headquarters Detachment, 28th Division; Headquarters Company, 28th Division; Headquarters Special Troops, 28th Division and Headquarters Detachment Special Troops, 28th Division on 6 February 1929. It was redesignated for the non-color bearing units of the 28th Infantry Division on 10 July 1968. 28th Infantry Division Song: "Roll On!" By SGT Emil Raab (circa 1944) We're the 28th men and we're out to fight again for the good old U.S.A. We're the guys who know where to strike the blow and you'll know just why after we say: Roll On, 28th, Roll On,