Battles of 1862 - 1863

In September 1862 the newly formed 20th Maine under the leadership of Adelbert Ames with Chamberlain as Lieutenant Colonel joined with the Third Brigade, First Division 5th Army Corps just before the battle of Antietam. By May 1863 Chamberlain was colonel in command of the regiment just in time for the Battle of Gettysburg and by July he would have temporary command of the brigade whose regiments are as follows:

20th Maine Infantry

Raising and Organization of a Regiment of Vols.
Army Life: a Private's Reminiscences
The Blue and the Gray
Annual Report of the Adjutant General
Maine in the War for the Union
Reunions of the 20th Maine at Portland
Reunions of the 20th Maine in Maine Bugle
Maine at Gettysburg
The 20th Maine at Little Round Top
Eastern Maine and the Rebellion

83rd Pennsylvania Infantry

History of the Eighty-third Regiment Pa. Vols.
83rd in "History of the Pennsylvania Volunteers"
Dedication 83rd Pa. Monument at Gettysburg
The Attack and Defense of Little Round Top
Strong Vincent and his Brigade at Gettysburg
Army Letters

44th New York Infantry

A History of the 44th Regiment
Dedication 44th NY Monument at Gettysburg

16th Michigan Infantry

Dedication 16th Mi. Monument at Gettysburg

Other histories of interest

140th New York Infantry

The Military Memoirs of Captain Henry Cribben of the 140 New York Volunteers

Petersburg

(June 5, 1864 - June 18, 1864)
Though Chamberlain would command these six regiments for less than two weeks he would still make a lasting impression on many of them.
These regiments made up the First Brigade of the First Division that was newly formed. Chamberlain having lost command of the Third Brigade to General Bartlett, a ranking officer who recently joined the Division, was given this new command that was equally impressive.

121st Pennsylvania Infantry

The History of the 121 Pennsylvania Infantry

142nd Pennsylvania Infantry

Two Reunions 142 Regiment Pa. Vols.

143rd Pennsylvania Infantry

143rd in "History of the Pennsylvania Volunteers"
143rd in "Pennsylvania at Gettysburg"
Encyclopedia of Pennsylvania Biography
Patrick DeLacy's Petersburg Account

149th Pennsylvania Infantry

History of Clearfield County Pennsylvania

150th Pennsylvania Infantry

History of the 150th Regiment Pa. Vols.

187th Pennsylvania Infantry

History of the 187th Regiment Pa. Vols.
187th in "History of the Pennsylvania Volunteers"

Other histories of interest

9th Massachusetts Battery

History of the 9th Massachusetts Battery

22nd Massachusetts Infantry

History of the 22nd Ma Infantry
Four Brothers in Blue

Battles of 1864 - 1865

Barely able to walk Chamberlain returned to the Army Oct 11, 1864. By this time the First Brigade had been reformed and contained only the following two regiments. To make up for the loss Chamberlain was also assigned command of the Second Brigade.

198th Pennsylvania Infantry

The History of the 198 Pennsylvania Infantry
198th in "History of the Pennsylvania Volunteers" History of Cambria County Pennsylvania

185th New York Infantry

The Honors of the Empire State in the War of the Rebellion
History of Cortland County
Roster of the 185th Regiment N.Y. V.
Newspaper Clippings

This battery fell under Chamberlain's command during the battle of Quaker road.

Battery B, Fourth U. S. Artillery

The cannoneer: recollections of service in the Army of the Potomac

The Third Brigade (see first column) by this time had lost the 44th New York, their enlistment being up, but had gained the following regiments. Briefly commanding this brigade before and after the Battle of Petersburg, Chamberlain would not command it again until after the surrender.

118th Pennsylvania Infantry

The History of the Corn Exchange Regiment
History of the Pennsylvania Volunteers
Annual Reports of the Corn Exchange Association

155th Pennsylvania Infantry

Under the Maltese Cross, History of the 155th Pa.

32nd Massachusetts Infantry

The story of the 32nd Regiment, Ma. Infantry
Massachusetts in the War

91st Pennsylvania Infantry

91st in "History of the Pennsylvania Volunteers"