The Union defensive line on aptly named Cemetery Ridge resembled an inverted fishhook, extending from Culp’s Hill on the north, down Cemetery Ridge and southward toward Big and Little Round Tops. Although the 650-foot-high Little Round Top was overshadowed by its larger neighbor, its position was more important because much of the hill was cleared of trees and it could better accommodate troops. Strategically, Little Round Top held the key to the developing battle. If the Southern troops could take and hold the hill, they could theoretically roll up the entire Union line.

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On the morning of July 2, Little Round Top proper held perhaps just a handful of Federal soldiers. Pennsylvania native Brig. Gen. John W. Geary’s division was aligned just north of the hill and was the largest Union force in the immediate area. Geary was ordered to rejoin the rest of his XII Corps at Culp’s Hill after elements of Sickles’ III Corps took his place. In the confusion of shifting troops, however, Geary pulled his men out too soon, before Sickles’ men had moved to replace them. Little Round Top was left uncovered. Later, when Sickles’ infantry did arrive, the controversial general moved his men, without orders, westward toward the Emmitsburg Road. Once again Little Round Top went wanting for protectors in blue.

Robert E. Lee, with his eerie sense of a battlefield, was hastily assembling a force to attack the Union left, but it would take him the greater part of the day to get his men ready to strike. Meanwhile, Meade also sensed something significant about the two adjacent hills to his left. That afternoon he sent his chief of engineers, Brig. Gen. Gouverneur K. Warren, to assess the situation. To his utter chagrin, Warren found Little Round Top completely undefended. He hastily sent messengers to Meade and Sickles, requesting immediate assistance. Sickles, by that time hotly engaged with el-ements of Longstreet’s corps, had none to spare. But Colonel Strong Vincent, who commanded the 3rd Brigade of Brig. Gen. Charles Griffin’s 1st Division of the V Corps, received word from a harried courier about the threat to Little Round Top and led his men to the hill at the double-quick. Vincent’s brigade included the 44th New York, 16th Michigan, 83rd Pennsylvania and the 358-man 20th Maine under Joshua L. Chamberlain.

The 34-year-old Chamberlain was one of the most interesting figures in the Civil War. A highly cultured, somewhat sedentary professor of modern languages at Maine’s exclusive Bowdoin College, he had sat out the first year of the war on Bowdoin’s stately campus. But in July 1862, sensing perhaps that the war was going to last a good deal longer than he had first believed, Chamberlain offered his services to the Union cause. I have always been interested in military matters, he informed Maine Governor Israel Washburn, and what I do not know in that line, I know how to learn. He was given command of the newly formed 20th Maine, a unit comprised of extra men left over from other new regiments. It was not, Chamberlain noted, one of the state’s favorite fighting units — No county claimed it; no city gave it a flag; and there was no send-off at the station.

The 20th Maine had been organized under President Abraham Lincoln’s second call for troops on July 2, 1862. The regiment initially fielded a total complement of 1,621 men, but by the time of the Battle of Gettysburg the stress of campaigning had reduced the regiment’s ranks to some 266 soldiers, and the 20th was considered a weak link in Vincent’s brigade. Fortune, however, was to smile on Chamberlain’s regiment in the form of unexpected reinforcements.

On May 23, 1863, 120 three-year enlistees from the 2nd Maine Infantry were marched under guard into the regimental area of the 20th Maine. The 2nd Maine men were in a state of mutiny and refused to fight, angry because the bulk of the regiment — men with only two-year enlistments — had been discharged and sent home, and the regiment had been disbanded. The mutineers claimed they had only enlisted to fight under the 2nd Maine flag, and if their flag went home, so should they. By law, however, the men still owed the Army another year of service.

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