Lieutenant Colonel Duehring entered the military in 1969 as an enlisted sailor with the United States Navy and was subsequently assigned to the Brunswick Naval Air Station from 1970 to 1973. 

He separated from the Navy to return to college.  In 1980 he enlisted in the Maine Army National Guard and attended Officers Candidate School obtaining his commission in 1981 as a Combat Engineer.  

He served in a variety of assignments to include:  Platoon Leader, TAC Officer for the Maine Military Academy, Company Executive Officer, Company Commander, Battalion and Group Plans Officer, Personnel Officer, Officer Personnel Manager, Commander of the Recruiting and Retention Force, Commander of the 133^rd Engineer Battalion, and Military Plans and Operations Officer for the Joint Forces Headquarters, Maine National Guard. 

He served a deployment to Afghanistan where he was assigned as the Forward Tactical Operations Officer for the 240^th Engineer Group (TASK FORCE CHAMBERLAIN) at Forward Operating Base Salerno.

His awards include:  Bronze Star Medal, Meritorious Service Medal (2^nd Award), Army Commendation Medal (2^nd Award), Navy Good Conduct Medal, Army Reserve Components Achievement Medal (7^th Award), Nation Defense Service Medal (3^rd Award), Afghanistan Campaign Medal, Global War on Terrorism Service Medal, Humanitarian Service Medal, Army Service Ribbon, Overseas Service Ribbon, Army Reserve Component Overseas Training Ribbon (3^rd Award), Armed Forces Service Medal with “M” (Mobilization) and 20 year device,  NATO Medal, Maine Achievement Award, Army National Guard Recruiter Badge, Maine Honorable Service Award, Maine “Ice Guard ‘98” Award with Device, Maine Physical Fitness Award (30^th Award) and Maine State Emergency Service Award (2^nd Award).

Combat Patches:  10 Mountain Division and 82^nd Airborne Division

Major Command Shoulder Patches:  1^st Army, 130^th Engineer Brigade and Maine Army National Guard

He and his wife Carol reside in Bath, Maine.  The Duehrings have four adult children and a grandchild.