918th Artillery Regiment and the 226th Independent Marine Regiment. The forces on Green Beach had to wait until 19:50 for the tide to rise, allowing another group to land. During this time, extensive shelling and bombing, along with anti-tank mines placed on the only bridge, kept the small KPA force from launching a significant counterattack. The second wave came ashore at "Red Beach" and "Blue Beach". The North Koreans had not been expecting an invasion at Incheon. After the storming of Green Beach, the KPA assumed (probably because of deliberate American disinformation) that the main invasion would happen at Kunsan. As a result, only a small force was diverted to Incheon. Even those forces were too late, and they arrived after the UN forces had taken Blue Beach and Red Beach. The troops already stationed at Incheon had been weakened by Clark's guerrillas, and napalm bombing runs had destroyed key ammunition dumps. In total, 261 ships took part. For Red Beach and Blue Beach, Vice Admiral James H. Doyle, Commander of an amphibious ready group, announced that H-Hour, time of landing, would be 17:30. The KPA 22nd Infantry Regiment had moved to Incheon before dawn on September 15, 1950, but retreated to Seoul after the main landing that evening. Red Beach The Red Beach forces, made up of the Regimental Combat Team 5, which included the 3rd Battalion of the Republic of Korea Marine Corps (ROKMC), used ladders to scale the sea walls. Lieutenant Colonel Raymond L. Murray, serving as Commanding Officer of the 5th Marines, had the mission of seizing an area long and deep, extending from Cemetery Hill (northern) at the top down to the Inner Tidal Basin (near Tidal Basin at the bottom) and including the promontory in the middle called Observatory Hill. (See Map) The 1st Battalion, 5th Marines would be on the left, against Cemetery Hill and northern half of Observatory Hill. The 2nd Battalion, 5th Marines would take the southern half of Observatory Hill and Inner Basin. Late on the afternoon of September 15, the LSTs approached Red Beach and as the lead ships, they came under heavy mortar and machine gun fire from KPA defenders on Cemetery Hill. Despite the concentrated fire, they disembarked assault troops and unloaded vital support equipment. In addition, their guns wiped out KPA batteries on the right flank of Red Beach. Three (, , and LST 973) of