George Rufus Gear was born on December 1, 1840, in Connecticut to Hiram and Jerusha Gear. His father died in 1843. The family lived in Middletown, Connecticut, until the 1850s, when they moved to Marietta, Ohio. He enrolled at Marietta College in 1860.
He left college after one year in order to enlist in the Union army, and he mustered in as a private in Company B of the 39th Ohio Infantry on August 3, 1861. The regiment took part in the siege of Corinth, the Atlanta campaign, the March to the Sea, and the Carolinas campaign. He remained devoted to the Union. In 1863, he described a statue of President Andrew Jackson in Memphis, Tennessee, inscribed with the words, “The Federal Union: It must be preserved.” “This monument,” he wrote, stood as a “sharp rebuke to the abetters of treason, and it finally became so unendurable that they tried to erase the offensive words with a chisel…But they did not succeed in erasing the words, any more than they have succeed[ed] in their attempts at destroying our Government.”
He supported the Emancipation Proclamation, which he viewed as a “war measure.” In March 1863, he argued that “the negro is the strength of the rebellion…Take from the rebels their slaves and they will be deprived of the great source of their supplies, and be compelled to return home to save their families from starvation.” He also supported Black enlistment, writing, “Employ any means to suppress this rebellion. The negro is the cause of the war; then let him bear a share of its burdens.” At the same time, however, he opposed attempts to “mix them or place them on an equality.”
In October 1864, he reported proudly that he "exerized my privilege as an American citizen and deposited my vote for the Union State Ticket." He was promoted to corporal on March 1, 1864, and to sergeant on Jun 1, 1865. In April 1865, he expressed “Intense sorrow…mingled with a terrible desire for vengeance” at the news of President Abraham Lincoln’s assassination. “Had [Joseph] Johns[t]on not surrendered,” he added, “it would have been impossible to control this army. Utter destruction would have henceforth marked our pathway, and very few prisoners would have been taken.”
He took part in the Grand Review, and he rejoiced in the Union's triumph. He confessed that he "had before but a feeble conception of the grandeur and extent of the Capitol and other public buildings, especially the Patent Office, and that more than ever my heart swells with pride when I seen the evidences of our Nation's greatness. 'I am a Roman citizen' was once thought to be an expression of honor by no means small. But to be a Roman citizen was an insignificant thing compared with the honors and benefits that American citizenship carries with it." In May 1865, he wrote that "Now that the war is over I am very anxious to return to civil life, but if the Government sees fit to hold us we must submit, of course." He mustered out on July 18, 1865.
He returned to Ohio after the war, and he married Julia A. Barnes on July 2, 1867. They had at least four children: George, born around 1870; Harry, born around 1872; Frances, born around 1874; and Kate, born around 1876. He served as principal of Marietta Academy from 1871 until 1879 before beginning work as a Baptist minister. He applied for a federal pension in March 1882 and eventually received one. He died in Washington County, Ohio, on October 2, 1931.