Retired Lt. Colonel Michael Kent Koeller, age 79, of Alameda, CA and formerly of West Alexandria, OH passed away on Monday, September 28, 2020 at his residence in Bradenton, Florida. He was born September 8, 1941 in Dayton, OH to the late Russell and Beatrice Koeller. He is survived by his daughter Kristen Koeller, his son Mark Koeller, and his sister Linda Koeller Gault. Visitation will be held on Saturday, October 3rd from 10:00 am until time of funeral service at 11:30 am at Salem Lutheran Church, 70 E. Dayton Street, West Alexandria, OH. Burial will follow the service at Sugar Grove Cemetery, West Alexandria with military honors provided by the Preble County Honor Guard. The family requests that guests wear a mask and practice social distancing. In lieu of flowers, memorial donations may be sent to the Lewy Body Dementia Association. Friends are invited to make a donation in the name of Mike Koeller by using the website [www.lbda.org/donate] or by mail to Lewy Body Dementia Association, 912 Killian Hill Road, S.W. Lilburn, GA 30047. Lindloff-Zimmerman Funeral Home, West Alexandria, OH is assisting with arrangements. Online condolence and other remembrances may be sent by visiting www.lindloffzimmerman.com.