Frank H. "Mike" Callahan, 90, of Lancaster, formerly of Milford, PA, passed away on Tuesday, June 5th, 2018 at Hospice & Community Care, Mt. Joy. He is survived by his wife Marlene (Horn) Callahan. He was born in Brooklyn, NY on June 19th, 1927 to the late Peter F. and Mary (Block) Callahan. Mike honorably served his country in two wars, in the US Navy and with the Marines in World War II during the Battle of Okinawa and Iwo Jima. He also served in the Korean War and was engaged in the Battle of the Chosen Reservoir. He was awarded the Purple Heart. He then served with the Army National Guard in New Jersey. Following his service, he was a Correctional Officer for the Mid-Hudson Forensic Psychiatric Center, Middletown, NY. After retiring as a Marine and Correctional Officer, he held a part time position as Deputy with the Pike County Sheriff Department, in Milford, PA. When he moved to Lancaster, PA to be near his family he worked with his two sons, Mike & Sean Callahan at Benchmark Construction Co. Inc. He was a former member of the American Legion Post #34 and the Marine Corps League. Mike was a very handy man, mechanically inclined, enjoyed watching and reading Westerns, was very Patriotic, and in his early day loved fixing cars. Most of all, he loved spending time with his family. Surviving in addition to his wife, Marlene; five children: Mike Callahan, husband of Neysa, Mountville; Colleen Jones, wife of Kirk, San Ramon, CA; Eileen Flugrath, Lancaster; Sean Callahan, husband of Sandy, Millersville; Noreen Stevens, of Mt. Airy, MD; eleven grandchildren: Bri, Mike, Keith, Kelly, Elissa, Kyle, Shannen, Sean, Robert, Shep, Mackenzie, and eight great grandchildren. Funeral Services will take place on Saturday, June 9th, 2018, at Grace Lutheran Church 517 N. Queen St. Lancaster, PA 17603 at 11AM with The Rev. Dr. Stephen P. Verkouw officiating. A viewing will be from 9:30AM-11AM at the church. Interment will take place on Monday at 9AM at Indiantown Gap National Cemetery. Memorial contributions in Mike's memory may be made to PA Wounded Warriors Inc. 1117 Country Club Rd. Camp Hill, PA 17112 or to Hospice & Community Care 685 Good Dr. Lancaster, PA 17604.