He then transferred to Battery C of the 31st Battalion, 8th Field Artillery training regiment at Fort Sill, Oklahoma and was discharged from active duty on July 1, 1945.
Rank and organization: First Lieutenant, U.S. Army, Battery A, 15th Field Artillery Battalion, 2d Infantry Division Place and date: Near Kobangsan-ni, Korea, August 27, 1951 Entered service at: Danbury, Conn.
Lt. Hartell, a member of Battery A, distinguished himself by conspicuous gallantry and intrepidity at the risk of his life above and beyond the call of duty in action against an armed enemy of the United Nations.
1st Lt. Hartell, attached to Company B, 9th Infantry Regiment, as forward observer, quickly moved his radio to an exposed vantage on the ridge line to adjust defensive fires.
Realizing the tactical advantage of illuminating the area of approach, he called for flares and then directed crippling fire into the onrushing assailants.
After the numerically superior enemy overran an outpost and was closing on his position, 1st Lt. Hartell, in a final radio call, urged the friendly elements to fire both batteries continuously.
Although mortally wounded, 1st Lt. Hartell's intrepid actions contributed significantly to stemming the onslaught and enabled his company to maintain the strategic strongpoint.