During the Civl War, Harvey served in the Union Army as a private in Co A, 1st Battalion, Georgia Infantry. He enlisted in Cleveland, TN March 19, 1864 and mustered out on July 9, 1865 in Chattanooga, TN. Later, Harvey filed for a pension for his service in the Union Army while living in Sebastian City, Arkansas and continued to received the pension after moving to Oklahoma. Harvey was killed in a shoot out, by a son in law, in 1901.
The following is an article in the McAlester News-Capitol, July 9, 1901:
"KILLED IN ASH CREEK - Old Man Gilreath and his son-in-law fight a Winchester duel at long range.
J. H. Sloan, a well-known farmer, residing near Cherryville, shot and kiled his father-in-law, at 3:00 yesterday afternoon, during a duel in which 16 shots were fired, nine by the old man and 7 by his son-in-law. Mr. Sloan came in this morning and surrendered to the US Marshall.
The killing is the result of a family feud of long standing, but which had become very acute of late. Old man Gilreath had quarreled with all his family and had often threatened that he would kill his son-in-law. A few days ago his wife had left him and went to live with her daughter, Mrs. Lee Garvin, on Ash Creek, saying that she was afraid of her husband, and tired of his abuse and threats.
Yesterday morning Mr. Sloan hitched up his team and went to his brother-in-law's on Ash Creek to do some haying. At about 3:00 he was sitting on the porch conversing with members of the family, when old man Gilreath emerged from a corn field about 150 yards away, and with a shout, "Look out!" opened fire with a Winchester. Mr. Sloan seized a Winchester that was on the porch and returned the fire, and after several shots he struck the old man shattering an arm. When struck, the old man shouted out, "You've hit me, you ________, but stand up and have it out."
At his seventh shot, and after the old man had fired 9 times, the latter sank to the ground, and died in a few minutes. Mr. Sloan at once returned to Cherryvale, and aas soon as he could, came in and surrendered. His examination will take place tomorrow before the commisssioner."