The 4th Infantry Division is a division of the United States Army based at Fort Carson, Colorado. It is composed of a division headquarters battalion, three brigade combat teams (two Stryker and one armor), a combat aviation brigade, a division sustainment brigade, and a division artillery. The 4th Infantry Division's official nickname, "Ivy", is a play on words of the Roman numeral IV or 4. Ivy leaves symbolize tenacity and fidelity which is the basis of the division's motto: "Steadfast and Loyal". The second nickname, "Iron Horse", has been adopted to underscore the speed and power of the division and its soldiers. World War I The 4th Division was organized at Camp Greene, North Carolina on 10 December 1917 under the command of Maj. Gen. George H. Cameron. It was here they adopted their distinctive insignia, the four ivy leaves. The ivy leaf came from the Roman numerals for four (IV) and signified their motto "Steadfast and Loyal". The division was organized as part of the United States buildup following the Declaration of War on 6 April 1917 and the entry of the United States into the war on the side of the British and French. Organization Headquarters, 4th Division 7th Infantry Brigade 39th Infantry Regiment 47th Infantry Regiment 8th Infantry Brigade 58th Infantry Regiment 59th Infantry Regiment 4th Field Artillery Brigade 13th Field Artillery Regiment (155 mm) 16th Field Artillery Regiment (75 mm) 77th Field Artillery Regiment (75 mm) 4th Trench Mortar Battery 4th Engineer Regiment 8th Field Signal Battalion Headquarters Troop, 4th Division 4th Train Headquarters and Military Police 4th Ammunition Train 4th Supply Train 4th Engineer Train 4th Sanitary Train 19th, 21st, 28th, and 33rd Ambulance Companies and Field Hospitals St. Mihiel Offensive For the Battle of Saint-Mihiel, the division moved into an area south of Verdun as part of the First United States Army. General John Pershing, commander of the American Expeditionary Force (AEF) on the Western Front, had gotten the French and British to agree that the AEF would fight under its own organizational elements. One of the first missions assigned to the AEF was the reduction of the Saint-Mihiel salient. The 4th Division, assigned to V Corps, was on the western face of the salient. The plan was for V Corps to push generally southeast and to meet IV Corps who was pushing northwest, thereby trapping the Germans in the St. Mihiel area. The