The 1st Marine Regiment, under the command of Colonel Lewis "Chesty" Puller, landed at Blue Beach, southeast of Red and Green beaches. Their mission, once the beach was secure, was to capture the suburb of Yongdungpo, cross the Han River, and form the right flank of the attack on Seoul itself. As the 1st Marine Regiment approached the coast, the combined fire from several KPA gun emplacements sank one LST. Destroyer fire and bombing runs silenced the KPA defenses. When the Blue Beach forces finally arrived, the KPA forces at Inchon had already surrendered, so they met little opposition and suffered few additional casualties. The 1st Marine Regiment spent much of its time strengthening the beachhead and preparing for the move inland.