There are two monuments and a company position marker to the Twentieth Maine on the battlefield at Gettysburg.
The main monument is on the southeast side of Little Round Top. (39.789476° N , 77.236146° W; map) This marks the center of the line the regiment held during its famous defense of Little Round Top on July 2nd. It was dedicated in 1886 by the State of Maine.
A marker showing the position of the regiment's Company B during the defense of Little Round Top is 100 yards to the east of the main monument. (39.788895° N, 77.234721° N; map) Captain Morrill and about 40 men of company B joined by a group of United States Sharpshooters were placed here to provide some protection to the flank of the 20th Maine.
A monument near the summit of Big Round Top shows the position to which the 20th Maine advanced during the evening July 2nd and which it held through the morning of the 3rd. (39.786642°N, 77.239544° W; map) It was dedicated in 1889.
Colonel Joshua Lawrence Chamberlain, the 20th Maine's commander at the Battle of Gettysburg, has become one the most famous men of the Civil War thanks to the novel The Killer Angels and the movie Gettysburg. He was wounded six times, earned the Medal of Honor, and went on after the war to serve as Governor of Maine and President of Bowdoin College.
The 20th Maine brought 386 men to the field, of whom 29 were killed, 91 wounded, and 5 missing. The names of the casualties are listed on the monument on Little Round Top (see below).
From the front of the monument on Little Round Top:
From the right side:
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.
This monument erected by survivors of this regiment A.D. 1888. Marks very nearly the spot where the colors stood.
From the left side:
Names of the officers and men of the Twentieth Maine Volunteers who were killed or died of wounds received in this action:
Capt. Charles W. Billings
From the Company B marker:
Position of Company B,
From the monument on Big Round Top:
The 20th Maine Reg.
(above) The 20th Maine's monument on Little Round Top - enlarge
(below) The position marker for Company B - enlarge
The 20th Maine's monument on Big Round Top - enlarge
or a closeup of its text
(below) left flank marker next to the trail up Big Round Top
(below) The north (left) of the Little Round Top monument - enlarge