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First tanks and troops of the First Cavalry Division enter shell-scarred city of Chunchon after the last communist stronghold on central Korean front fell on March 21, 1951. Walking in center of road are (left to right): Maj. Gen. Charles D. Palmer, commanding the First Cavalry; and Col. Marcel G. Grombez, Portland, Ore., a regimental commander. (AP Photo/Jim Pringle #