James Dayton Osborne was born on September 24, 1922, to Arlie Graydon Osborne and Lillie Eulalah Eller. He had seven brothers and five sisters. Four of his brothers, Arlie, John, Ed, and Fred, as well as his father, Arlie Graydon, all served in the military.
James Dayton Osborne enlisted in the Army on March 22, 1941, at the age of 18, in Fort Bragg, NC. He served as a Private during World War II and was discharged on October 19, 1945.
After returning home, James Dayton Osborne lived a long life, passing away at the age of 70 on October 4, 1992. He was buried in the Osborne Family Cemetery at Union United Methodist Church.