Rear Admiral Kazumine Akimoto began his service career in 1967, when he joined the JMSDF. After completing the Command and Staff Course at the Maritime Staff College, he held several positions in the Maritime Staff Office (MSO) and the Operation Evaluation Office. Positions held include: Liaison staff with Patrol and Reconnaissance Force US 7th Fleet; Head, Flight Research and Development Division VX 51; Chief, Intelligence Section of the MSO Intelligence Department; Chief of Staff, Fleet Air Wing. He was assigned as a senior researcher at the National Institute for Defense Studies (NIDS) at the Japan Defense Agency (now Ministry of Defense) in 1995. He retired from JMSDF and resigned from the NIDS in 2000, and joined the Ocean Policy Research Foundation (now, Ocean Policy Research Institute of The Sasakawa Peace Foundation) as a senior research fellow.