American Combat Formations

Higher Formations

	FIRST ARMY: was organized for the St. Mihiel offensive and served on the front for the rest of the war.
	SECOND ARMY: was organized 10 October during the Meuse-Argonne operation and served through the last month of the war.
	THIRD ARMY: was organized after the armistice for occupation duty inside Germany.

Army Corps

	I Corps: organized to control several divisions, the First Corps participated in the St Mihiel offensive, and Meuse-Argonne operation through to the end of the war.
	II Corps: served primarily with the British forces.
	III Corps: organized in time for the Meuse-Argonne attack, it stayed on after the armistice to serve as part of the occupation force in Germany.
	IV Corps: serving in the St Mihiel offensive and the Meuse-Argonne operation. After the end of the war it also participated in the occupation of Germany.
	V Corps: was involved in both the St Mihiel and the Meuse-Argonne attacks through to the end of the war.
	VI Corps: did not participate in the fighting and was primarily engaged in salvage work on the battlefields.
	VII Corps: was stationed in Luxembourg as a reserve for the units in occupied Germany immediately after the war.
	VIII Corps: became operational after the post armistice reorganization.
	IX Corps: was engaged in salvage work on the battlefields.

Regular Army Divisions

	1ST DIVISION: was the first division formed, the first division in France and the first American division to engage in combat on the Western Front.
	2ND DIVISION: was organized in France in the fall of 1917 from miscellaneous units which included an entire brigade of United States Marines.
	3RD DIVISION: arrived in France in the spring of 1918. Since its baptism of fire it has been remembered as the "Marne Division".
	4TH DIVISION: arrived in France in the spring of 1918 and served with distinction throughout the war.
	5TH DIVISION: also arrived in France in the spring of 1918 serving along the line until the end of the war.
	6TH DIVISION: arrived overseas in the summer of 1918. Since it is reported to have marched more than any other division, it was known as the "Sight-seeing Sixth".
	7TH DIVISION: arrived overseas in late summer of 1918. It occupied a sector in Lorraine from October to November.
	8TH DIVISION: was organized in late 1917 and by the time of the armistice only a third of the division had arrived in France.
	10TH DIVISION: was organized in the States in late summer of 1918 and never finished training to leave for the front.
	11TH DIVISION: was nicknamed "The Lafayette Division", it was also organized in the States in late summer of 1918 too late to finish training.
	12TH DIVISION: nicknamed "The Plymouth Division" because of its New England recruits. Never finished training to ship out for France.
	13TH DIVISION: organized in September of 1918, its patch included proverbial bad luck symbols.
	14TH DIVISION: known as the "Wolverine Division" because of its Michigan recruits, it was organized in July 1918.
	18TH DIVISION: organized in August 1918, it was known as the "Cactus Division."
	19TH DIVISION: I have seen a division patch for such a Division on a chart in the Hardin County Court House in Ohio. I hope to take a picture and include it here as I am able.

National Guard Divisions

	26TH DIVISION: was formed from New England Troops and sailed for Europe in the fall of 1917. Only the 1st Division saw action before these "Yankee Division" guardsmen.
	27TH DIVISION: was the "New York Division" which arrived in France in the spring of 1918 to serve with the British Army for the duration.
	28TH DIVISION: was the "Keystone Division" from Pennsylvania. It suffered the highest casualties of the National Guard units, serving from the spring of 1918.
	29TH DIVISION: known as the "Blue & Gray Division" because of its mix of northern and southern units from the east coast. It arrived overseas in the summer of 1918.
	30TH DIVISION: arrived in France in the spring of 1918 to serve with the British and American units through the armistice. Its nickname was "the Old Hickory Division".
	31ST DIVISION: known as the "Dixie Division" it arrived in France in October 1918 and never entered the line.
	32ND DIVISION: formed from Wisconsin and Michigan men, it arrived in France in February of 1918 and served with distinction.
	33RD DIVISION: formed from Illinois troops, it arrived in France in late spring 1918 where it trained with Australian troops. It was in the line from September to the end.
	34TH DIVISION: was formed from Mid-Western units, it arrived in France too late to see combat.
	35TH DIVISION: known as the "Santa Fe Division" of men from the Great Plains, it arrived overseas in the spring of 1918 and saw active service until the armistice.
	36TH DIVISION: was formed from the Texas & Oklahoma National Guard. It arrived in France in the summer of 1918 and saw limited action with the French Army.
	37TH DIVISION: arrived in France in the summer of 1918. Its Ohio and West Virginia troops saw action in the last offensives of the war.
	38TH DIVISION: known as the "Cyclone Division" this unit of Indiana & Kentucky guardsment arrived to late in the fall of 1918 to see action.
	39TH DIVISION: organized from guardsmen from the deep south it arrived in the summer of 1918 where it became a depot division providing replacements to combat units.
	40TH DIVISION: organized from far western units the "Sunshine Division" arrived in the late summer of 1918 where it too became a depot division.
	41ST DIVISION: formed from northwestern troops, this was the first of the depot divisions to arrive in the European theater.
	42ND DIVISION: fromed from left over state units, the "Rainbow Division" arrived in November 1917 and saw active service through the end of the war.

National Army Divisions

	76TH DIVISION: was formed from the first draft and arrived the next summer where it served as a depot division providing replacements to front line units.
	77TH DIVISION: was the first of the National Army Divisions to cross over to France in the spring of 1918. It saw active service through the end of the war.
	78TH DIVISION: known as the "Lightning Division" it was organized from draftees from western New York. It arrived overseas in the summer of 1918 and saw action.
	79TH DIVISION: organized in Maryland, it arrived in Europe in the summer of 1918 and saw action through the end of the war.
	80TH DIVISION: known as the "Blue Ridge Division" it went to France in the summer of 1918, saw action with British and American forces.
	81ST DIVISION: known as the "Wild Cat Division", it was the first division to use a shoulder patch. It arrived in the summer of 1918 and saw limited action on the front.
	82ND DIVISION: this "All American Division" was the second National Army Division to arrive in Europe. It saw action right through to the end of the war.
	83RD DIVISION: organized from Ohio and West Virginia draftees, it arrived in France during the summer of 1918 where it served as a depot division.
	84TH DIVISION: formed from Midwestern draftees it arrived overseas in the early fall of 1918 too late to see combat.
	85TH DIVISION: the "Custer Division" served as a depot division in France and even sent one regiment to serve in Northern Russia.
	86TH DIVISION: formed from men from northern Illinois, it arrived in France too late to enter the line.
	87TH DIVISION: created from southern draftees, it too arrived in France in late fall, too late to see action.
	88TH DIVISION: formed from western draftees, it arrived overseas in the summer of 1918 and saw action through the end of the war.
	89TH DIVISION: this "Mid West Division" arrived in France in June 1918 and saw action from August through the end of the war.
	90TH DIVISION: was activated from draftees in the Southwest. It arrived in France in June of 1918 and saw action to the end of the war.
	91ST DIVISION: originated in the Northwest. It went over in the summer of 1918 and served through the end of the war in several offensive operations.
	92ND DIVISION: was formed from colored troops from all of the states. It left for France in July of 1918 and saw action in several of the campaigns.
	93RD DIVISION: also formed from colored troops, but never completed. It arrived in France in April of 1918 and its individual regiments saw active service with French units.
	THE TANK CORPS: emblematic of the branch colors for infantry, cavalry and artillery (blue, yellow and red). This new force laid the ground work for future developments in armored combat.