Serving on board the U.S.S. Pittsburgh, Mississippi River 29 April 1863. Engaging the enemy batteries at Grand Gulf, the U.S.S. Pittsburgh, although severely damaged and suffering many personnel casualties, continued to fire her batteries until ordered to withdraw. Taking part in a similar action after nightfall, the U.S.S. Pittsburgh received further damage, but received no personnel casualties in the latter action. Woon showed courage and devotion to duty throughout these bitter engagements.