Battle of Antietam

The regiment was not engaged in the battle, staying in reserve with much of the Fifth Corps

Battle of Shepherdstown

Corporal Waterhouse became the regiment’s first casualty when he was wounded in the foot. Two other men were wounded, and Lieutenant Colonel Chamberlain lost the first of many horses shot from under him during the Civil War.

Battle of Fredericksburg

The regiment lost four men killed and 32 wounded, charging the deadly Confederate defenses on Marye’s Heights late in the day on the 13th and spending the next day and two nights lying in the open in front of enemy positions. , The 20th Maine was one of the last regiments to retreat back across the Rapahnnock, serving as a rear guard for the army.

“Mud March”

Chancellorsville Campaign

Battle of Chancellorsville

The regiment missed the battle due to being under smallpox quarantine. Lieutenant Colonel Chamberlain pleaded with Brigadier General Daniel Butterfield to put the men into the fight and was refused. Chamberlain replied, “If we couldn’t do anything else we would give the Rebels the smallpox!” Instead, the regiment was assigned to guard duty on the telegraph line from headquarters to United States Ford, although Lieutenant Colonel Chamberlain joined the First Division for the fight and lost another horse shot from underneath him.

Gettysburg Campaign

Battle of Gettysburg

From the main monument on Little Round Top:

Here the 20th Maine Regiment Col. J. L. Chamberlain commanding, forming the extreme left of the national line of battle on the 2nd day of July 1863, repulsed the attack of the extreme right of Longstreet’s Corps and charged in turn, capturing 308 prisoners. The regiment lost 38 killed or mortally wounded and 93 wounded out of 358 engaged.

Names of the officers and men of the Twentieth Maine Volunteers who were killed or died of wounds received in this action: Co. C, Capt. Charles W. Billings;  Co. I, 1 Lieut. Arad H. Linscott; Co. G, 2nd Lieut. Warren L. Kendall; Co. A, Corp. Joseph D.Simpson, Priv. John Reed Jr., 1st Serg. Issac W. Estes, Priv. Elliott L. Fogg, Priv. Moses Davis,  Priv. Oliver L. Stevens,  Priv. Charles M. Beadle, Corp. Willard Pinkham,  Corp. Andrew D. Maybury, Priv. Stephen A. Prescott, Corp. Paschal M. Tripp,  Corp. John Foss, Corp. William S. Hodgdon, Priv. Seth W. Clark, Priv. John Wentworth;  Co. F, Priv. Oscar Wyer, Priv.  Charles F. Hall, Priv.  Benjamin W. Grant, Priv. Frank B. Curtis, Priv. Elfin J. Ross, Co. G, Serg. William S. Jordan, Corp. Melville C. Law, Priv. James A. Knight; Co. H, 1st Serg. Charles W. Steele, Serg.George W. Buck, Serg  Isaac M. Lathrop, Priv. Aaaron Adams, Priv. Goodwin S. Ireland, Priv.  Iredell Lamson; Co. I, Priv. Alexander E. Lester; Co. K, 1st Serg. George S. Noyes, Priv. James R. Merrill, Priv.  William F. Merrill, Priv.  Stephen C. Chase, Priv. Williard W. Buxton

From the Company B monument, located about 50 yards to the east of the main monument on Little Round Top:

Position of Company B, 20th Me. Vols., Capt. Walter G. Morrill, detached as skirmishers, attacking the enemy’s right flank, afternoon of July 2, 1863.

From the regiment’s monument near the summit of Big Round Top:

The 20th Maine Reg. 3d Brig. 1st. Div. 5th Corps Colonel Joshua L. Chamberlain captured and held this position on the evening of July 2d, 1863, pursuing the enemy from its front on the line marked by its monument below. The Regt. lost in the battle 130 killed and wounded out of 358 engaged. This monument marks the extreme left of the Union line during the battle of the 3d day.

Bristoe Campaign

Rappahannock Station

Mine Run Campaign

Campaign from the Rapidan to the James

Battle of the Wilderness

Laurel Hill

Battle of Spotsylvania Court House

North Anna River

Totopotomoy

Battle of Cold Harbor

First Assault on Petersburg

Siege of Petersburg begins

Rive’s Salient

Colonel Chamberlain was badly wounded in the right hip and groin. It was considered a mortal wound and was reported as such in the newspapers, and General Grant promoted him to brigadier general based on the recommendation of Major General Gouverneur K. Warren. But Chamberlain recovered and returned to the army by the end of the year, serving until the end of the war. It is believed the wound was eventually responsible for Chamberlain’s death, 50 years later in 1914.

Weldon Railroad

Mine Explosion, Petersburg (Reserve)

Poplar Springs Church, Peeble’s Farm

Boydton Plank Road (First Hatcher’s Run)

Hatcher’s Run (Dabney’s Mills)

Appomattox Campaign

White Oak Road

Brevet Lieutenant Colonel Spear was brevetted colonel for “faithful and meritorious service”

Battle of Five Forks

High Bridge

Appomattox Court House

Surrender of Lee and his army