Mission ISRM - I Shall Return, MacArthur, details the vital intelligence gathering and reporting operations of American and Filipino soldiers on the island of Mindoro during World War II. The mission's code-name, "ISRM," was derived from the famous slogan of General MacArthur, "I shall return," his promise to liberate the Philippines from the Japanese. The book was first published in 1961 as Bahala Na...Come what may: The Story of Mission ISRM, An Army-Navy Intelligence Mission in the Pacific. The objective of Mission ISRM was primarily to provide intelligence on enemy movements - on ground, sea and air - in and around Manila and the Manila Bay region. Members of the mission and their equipment were transported secretly by submarine to Mindoro, where they went about the dangerous task of establishing observation posts and radio transmission sites in enemy-held territory. Information was transmitted to allied headquarters in Australia, and would prove invaluable in planning for the coming invasion of Philippines by the allies. A secondary objective was the harassment of the enemy and sabotage of Japanese supply and communication lines. Included are a Foreword by Douglas MacArthur, a map, and 8 pages of photographs.