The President of the United States of America, under the provisions of the Act of Congress approved July 9, 1918, takes pleasure in presenting the Distinguished Service Cross to Sergeant Donald Eugene Joslen, United States Army, for extraordinary heroism in connection with military operations against an armed enemy of the United Nations while serving with Company H, 2d Battalion, 9th Infantry Regiment, 2d Infantry Division. Sergeant Joslen distinguished himself by extraordinary heroism in action against enemy aggressor forces in the vicinity of Chalp’-ot’-o, Korea, on 24 May 1951. On that date, the 2d Battalion, 9th Infantry Regiment, was attacking a well-entrenched enemy force occupying Hill 895 near Chalp’-ot’-o. When the battalion had advanced about halfway up the hill, the lead company was pinned down by intense enemy automatic-weapons and mortar fire, temporarily halting the entire advance. Sergeant Joslen, an 81-mm. mortar forward observer with the lead company, continued to move up the hill under direct observation and fire of the enemy to a point where he could adjust and direct mortar fire on the hostile positions. As he began calling in fire orders, the enemy placed a mortar barrage on the friendly positions. Despite the intense small-arms fire and mortar shell fragments covering the area around his position, he continued to adjust mortar fire with such accuracy that the enemy mortars were silenced and several cleverly concealed machine-gun emplacements were knocked out of action. As a result of the courageous actions of Sergeant Joslen, the enemy suffered tremendous casualties and the 2d Battalion was able to seize and secure its objective. The extraordinary heroism displayed by Sergeant Joslen on this occasion reflects the greatest credit on himself and is in keeping with the high traditions of the military service.