Editing 2nd Infantry Division (United States) (section)

===World War I===
[[File:Preston Brown.jpg|thumb|right|upright|[[Preston Brown (general)|Preston Brown]], wearing the 2nd Division insignia]]
[[File:Major General Edward Mann Lewis, US Army.jpg|thumb|right|upright|[[Edward Mann Lewis]], with decorations]]
The 2nd Division was first constituted on 21 September 1917 in the [[Regular Army (United States)|Regular Army]].<ref name="lineage">{{cite web |url=http://www.history.army.mil/html/forcestruc/lineages/branches/div/002id.htm |title=Lineage and Honors Information: 2nd Infantry Division |publisher=[[United States Army Center of Military History]] |access-date=3 November 2009 |archive-date=17 September 2020 |archive-url=https://web.archive.org/web/20200917043305/https://history.army.mil/html/forcestruc/lineages/branches/div/002id.htm |url-status=dead }}</ref><ref>In World War I, there was only one type of division in the US Army, the infantry division, and all divisions were called simply "Division".</ref><ref>{{cite book |last=Rinaldi |first=Richard A. |title=The U. S. Army in World War I: Orders of Battle |publisher=General Data LLC |year=2004 |pages=29–30 |isbn=0-9720296-4-8}}</ref><ref name="stanton2006"/> It was organized on 26 October 1917 at [[Bourmont]], [[Haute Marne]], France.<ref name="divhist">{{cite web |url=http://www.2id.korea.army.mil/history/ |title=2nd Infantry Division Homepage: History |publisher=2nd Infantry Division |access-date=4 November 2009 |url-status=dead |archive-url=https://web.archive.org/web/20120707025859/http://www.2id.korea.army.mil/history |archive-date=7 July 2012}}</ref>

====Order of battle====
[[File:Second Infantry Division Order of Battle.png|thumb|Order of Battle for the Second Infantry Division in the First World War]]
* Headquarters, 2nd Infantry Division
*  [[U.S. 3rd Infantry Brigade|3rd Infantry Brigade]]
** [[9th Infantry Regiment (United States)|9th Infantry Regiment]]
** [[23rd Infantry Regiment (United States)|23rd Infantry Regiment]]
** 5th Machine Gun Battalion
* [[4th Marine Expeditionary Brigade|4th Marine Brigade]]
** [[5th Marine Regiment (United States)|5th Marine Regiment]]
** [[6th Marine Regiment (United States)|6th Marine Regiment]]
** [[6th Machine Gun Battalion (United States Marine Corps)|6th Machine Gun Battalion]]
* 2nd Field Artillery Brigade
** [[12th Field Artillery Regiment]] (75&nbsp;mm)
** [[15th Field Artillery Regiment (United States)|15th Field Artillery Regiment]] (75&nbsp;mm)
** [[17th Field Artillery Regiment]] (155&nbsp;mm)
** 2nd Trench Mortar Battery
* 4th Machine Gun Battalion
* 2nd Engineer Regiment
* 1st Field Signal Battalion
* Headquarters Troop, 2nd Division
* 2nd Train Headquarters and Military Police
** 2nd Ammunition Train
** 2nd Supply Train
** 2nd Engineer Train
** 2nd Sanitary Train
*** 1st, 15th, 16th, and 23rd Ambulance Companies and Field Hospitals<ref name=McClellan>{{cite book|last1=McClellan|first1=Major Edwin N.|title=The United States Marine Corps in the World War|date=1920|publisher=U.S. Marine Corps History Division|location=Washington D.C.|url=http://www.au.af.mil/au/awc/awcgate/usmchist/war.txt|archive-url=https://web.archive.org/web/20001214065600/http://www.au.af.mil/au/awc/awcgate/usmchist/war.txt|url-status=dead|archive-date=14 December 2000|access-date=23 February 2017}}</ref><ref name="mcgrath">{{cite book | url=https://books.google.com/books?id=KWrLJj-iTlAC&q=The+Brigade%3A+A+History%3A+Its+Organization+and+Employment+in+the+US+Army | title=The Brigade: A History: Its Organization and Employment in the US Army | publisher=Combat Studies Institute Press | last=McGrath | first=John J. | year=2004 | page=165 | isbn=978-1-4404-4915-4}}</ref>

Twice during World War I the division was commanded by [[US Marine Corps]] generals, [[Brigadier General]] [[Charles A. Doyen]] and [[Major General]] [[John A. Lejeune]] (after whom the Marine Corps Camp in North Carolina is named), the only time in U.S. military history when Marine Corps officers commanded an Army division.<ref name="divhist"/>

The division spent the winter of 1917–18 training with French and Scottish veterans. Though judged unprepared by French tacticians, the [[American Expeditionary Force]] (AEF) was committed to combat in the spring of 1918 in a desperate attempt to halt a German advance toward Paris. Major General [[Edward Mann Lewis]] Commanded the 3rd Brigade as they deployed to reinforce the battered French along the Paris to Metz road. The division first fought at the [[Battle of Belleau Wood]] and contributed to shattering the four-year-old stalemate on the battlefield during the [[Battle of Château-Thierry (1918)|Château-Thierry campaign]] that followed.

On 28 July 1918, Marine Corps Major General [[John A. Lejeune|Lejeune]] assumed command of the 2nd Division and remained in that capacity until August 1919, when the unit returned to the US. The division went on to win hard-fought victories at [[Battle of Soissons (1918)|Soissons]] and [[Battle of Blanc Mont Ridge|Blanc Mont]]. Finally the Indianhead Division participated in the [[Meuse-Argonne Offensive]] which ended any German hope for victory. On 11 November 1918 the [[Armistice]] was declared, and the 2nd Division entered Germany, where it assumed occupation duties until April 1919.

The 2nd Division was three times awarded the [[Croix de guerre 1914–1918|French Croix de guerre]] for gallantry under fire at Belleau Wood, Soissons, and Blanc Mont. This entitles current members of the division and of those regiments that were part of the division at that time (including the 5th and 6th Marine Regiments) to wear a special lanyard, or [[fourragère]], in commemoration. The Navy authorized a special uniform change that allows hospital corpsmen assigned to 5th and 6th Marine Regiments to wear a shoulder strap on the left shoulder of their dress uniform so that the fourragère can be worn.

The division lost 1,964 (plus USMC: 4,478) killed in action and 9,782 (plus USMC: 17,752) wounded in action.{{Citation needed|date=February 2017|reason=These numbers don't make sense. All USMC deaths in France during WWI did not exceed 3,300. According to one reference I found, the 2nd Division's wounded totaled 9,515 between March and November 1918. I can't find an official Army/USMC killed/wounded breakout, or I'd correct it.}}

====Major operations====
[[File:Omar Bundy & John A. Lejeune.jpg|thumb|upright|Omar Bundy & John A. Lejeune]]
* [[Third Battle of the Aisne]]
* [[Battle of Belleau Wood|Belleau Wood]]
* [[Battle of Château-Thierry (1918)|Château-Thierry campaign]]
* [[Battle of Saint-Mihiel|St. Mihiel]]
* [[Meuse-Argonne Offensive]]
* [[Aisne-Marne offensive]]
* Source for World War I data and information: [[United States Army Center of Military History]], The Army Almanac: A Book of Facts Concerning the Army of the United States, U.S. Government Printing Office, 1950, pp.&nbsp;510–592.