File:19TH INFANTRY WWI G PATCH.png19TH INFANTRY DIVISION NATIONAL GUARD WWI ERA SSI19th Division: A National Guard division established in early 1917 consisting of Arizona, California, Colorado, Nevada, New Mexico, and Utah. By the end of that same year, the 19th Division became the 40th Division (later 40th Infantry Division).
The 19th Division was organized on September 1st, 1918 as a Regular Army and National Army division for service in the American Expeditionary Force from a mixture of existing and newly-raised units, however the division did not go overseas and demobilized in February 1919 at Camp Dodge, Iowa.[1]
The 19th Division gained the nickname "Twilight Division" and was composed of the following units, not all of which joined before the Armistice:[2]
During the Second World War the 19th Infantry Division remained inactive. However, it saw service of a kind as a "phantom division" as part of Allied deception measures. The 19th was notionally assigned to SHAEF for use in Operation Fortitude South, but was never actually utilized during that endeavor.
The division's order of battle included the following fictional units:
Headquarters, 19th Infantry Division
572nd Infantry Regiment
573rd Infantry Regiment
578th Infantry Regiment
Divisional Troops
In July 1944 the Division was redesignated as the 109th Infantry Division.
