John Kerry Davis (born March 14, 1927) is a retired United States Marine Corps four-star general. Davis, a Vietnam War veteran and naval aviator, served as the Commanding General of the 3rd Marine Aircraft Wing (1977–1978) and the 1st Marine Aircraft Wing (1978-1978). His final assignment was as the Assistant Commandant of the Marine Corps from July 1, 1983 to June 1, 1986. Using only the above description and what you know about the world, "Davis Served was serving in the Marine Corps on February 29th, 1984" is definitely correct, incorrect, or inconclusive? 