Contains 58 photos and 10 maps and charts. "The return of Allied forces to the Philippines in the fall of 1944 further throttled Japan's already tenuous pipe line to the rich resources of Malaya and the Netherlands Indies, and with it the last vestige of her ability to meet the logistical requirements of a continuing war. The Battle for Leyte Gulf marked the end of Japan as a naval power, forcing her to adopt the desperation kamikaze tactic against the United States Fleets. The Philippine victories were primarily Army and Navy operations. Marines, comprising only a fraction of the total forces engaged, played a secondary but significant role in the overall victory. The campaign was important to the Corps in that the Marine aviators, who had battled two years for air control over the Solomons, moved into a new role, their first opportunity to test on a large scale the fundamental Marine doctrine of close air support for ground troops in conventional land operations. This test they passed with credit, and Marine flyers contributed materially to the Philippine victory. Lessons learned and techniques perfected in those campaigns form an important chapter in our present-day close air support doctrines."-C. B. CATES, GENERAL, U.S. MARINE CORPS, COMMANDANT OF THE MARINE CORPS