T. A. WORNHAM, _Major General, U. S. Marine Corps_, _Assistant Chief of Staff, G-3_. Contents _Page_ I The Communist Challenge 1 Authorization of Marine Brigade--First Conference on Inchon Landing--General Shepherd in Tokyo--Request for a Marine Division--America’s Force-in-Readiness-- Planning for the Pohang Landing II The Minute Men of 1950 17 Expansion to Full Peace Strength--Mobilization of Marine Corps Reserve--The Influx at Camp Pendleton-- Embarkation of 1st Marine Division--Build-up of 7th Marine Regiment--Staff Groups Flown to Japan III Operation Plan CHROMITE 37 Interview with General MacArthur--Conferences in Tokyo--Inception of X Corps--Final Conference on Inchon--Brigade Victory in Korea--The Marine Amphibious Mission IV The Planning Phase 53 Working Around the Clock--X Corps Scheme of Maneuver-- Intelligence Planning for Inchon--The Landing Force Plan--Naval Gunfire and Rockets--Plans for Air Support V Embarkation and Assault 73 Landing of 1st Marine Division--Plan to Seize Kimpo Airfield--Shipping Assigned to Marines--Movement to the Objective Area--Strikes and Bombardments--Marine Landings on GREEN Beach--The Two Harbor Islands Secured VI Hitting the Beaches 97 The Assault Plan--Beginning the Ship-to-Shore Movement-- Seizure of Cemetery Hill--RED Beach Secured--LSTs under Enemy Fire--Fighting on Observatory Hill--1st Marines on BLUE Beach--Ending the Ship-to-Shore Movement--Seizure of the 0-1 Line VII Securing the Beachhead 125 Supplies on RED and BLUE Beaches--Surgical Teams on the Beaches--Artillery and Tank Operations--The Attack on D-plus 1--Advance to the Force Beachhead Line-- Displacement Ashore of Division CP VIII On to Kimpo 143 Operations on Other Korean Fronts--Landing of RCT-7 in Japan--Destruction of NKPA Tank Column--General MacArthur Visits the Front--The Drive to Kimpo Airfield--Action at 5th Marines CP--Enemy Counterattack at Kimpo IX Marine Air Support 165