The Japanese reacted vigorously. For the first time in the war they employed Kamikaze attacks, suicide missions flown by young, half-trained pilots. And they used their last carriers as decoys to draw Halsey's carriers away from the beachheads. With Halsey out of the battle and the landing forces without air cover, the Japanese planned to use conventional warships to brush aside the remaining American warships and destroy the support vessels anchored off the beaches. They almost succeeded. In the naval Battle of Leyte Gulf, the big guns of the big ships, not carrier planes, decided the battle. The Japanese naval forces were decimated. Japan no longer had an effective navy.
As violent as they were, most island fights involved small units and were mercifully short. However, the last two major campaigns of the Pacific war--Luzon and Okinawa--took on some of the character of the war in Europe. They were long fights on larger land masses, with entire armies in sustained combat over the course of several months. Japanese defenders on Luzon numbered 262,000 under Lt. Gen. Tomoyuki Yamashita, perhaps the best field commander in the Japanese Army. Yamashita refused an open battle, knowing that superior firepower and command of the air would favor the Americans. Instead, he prepared defensive positions where his forces could deny the Americans strategic points like roads and airfields. He wanted to force the Americans to attack Japanese positions in a new battle of attrition.
His plan worked. MacArthur's Sixth Army under Lt. Gen. Walter Krueger landed on Luzon on 9 January 1945 and began the Army's longest land campaign in the Pacific. MacArthur's forces fought for almost seven months and took nearly 40,000 casualties before finally subduing the Japanese.
The largest landings of Nimitz's central Pacific drive were carried out on Okinawa, only 300 miles from Japan, on 1 April 1945. Before the fight was over three months later, the entire Tenth Field Army-- four Army infantry divisions and two Marine divisions--had been deployed there. Like his counterpart on Luzon, the Japanese commander on Okinawa, Lt. Gen. Mitsuru Ushijima, refused to fight on the beaches and instead withdrew into the rocky hills to force a battle of attrition. Again the strategy worked. U.S. casualties were staggering, the largest of the Pacific war. Over 12,000 American soldiers, sailors, and marines died during the struggle. At Okinawa the Japanese launched the greatest Kamikaze raids of the war, and the results were frightening--26 ships sunk and 168 damaged. Almost 40 percent of the American dead were sailors lost to Kamikaze attacks.
When the Luzon and Okinawa battles ended in July, the invasion of the southernmost Japanese island of Kyushu had already been ordered by the Joint Chiefs. The date was set for 1 November 1945. Kyushu would furnish air and naval bases to intensify the air bombardment and strengthen the naval blockade around Honshu, the main island of Japan. A massive invasion in the Tokyo area was scheduled for 1 March 1946 if Japanese resistance continued. With the Okinawa experience fresh in their minds, many planners feared that the invasion of Japan would produce a bloodbath.
In fact, Japan was already beaten. It was defenseless on the seas; its air force was gone; and its cities were being burned out by incendiary bombs. The atomic bombings of Hiroshima and Nagasaki on 6 and 9 August and the Soviet declaration of war on 8 August forced the leaders of Japan to recognize the inevitable. On 15 August 1945, Emperor Hirohito announced Japan's surrender to the Japanese people and ordered Japanese forces to lay down their arms. Despite their earlier suicidal resistance, they immediately did so. With V-J Day--2 September 1945--the greatest war in human history came to an end.
Aftermath
The United States emerged from the war with global military commitments that included the occupation of Germany and Japan and the oversight of Allied interests in liberated areas. Almost 13 million Americans were in uniform at the end of the war; over 8 million of them were soldiers. But the impulse was strong to follow the patterns of the past and dismantle this force. Families pressed the government to "bring the boys home," and soldiers overseas demanded the acceleration of the separation process. American monopoly of the atomic bomb seemed to furnish all the power that American security interests needed. Some air power advocates even argued that the bomb made armies and navies obsolete.
President Roosevelt had died in April 1945, on the eve of victory. The new President, Harry S. Truman, and his advisers tried to resist the political pressures for hasty demobilization. Truman wanted to retain a postwar Army of 1.5 million, a Navy of 600,000, and an Air Force of 400,000. But neither Congress nor the American public was willing to sustain such a force. Within five months of V-J Day, 8.5 million servicemen and women had been mustered out, and in June of the following year only two full Army divisions were available for deployment in an emergency. By 1947 the Army numbered a mere 700,000--sixth in size among the armies of the world.
Yet too much had changed for the Army to return to its small and insular prewar status. Millions of veterans now remembered their service with pride. The beginning of the Cold War, especially the Berlin blockade of 1948, dramatically emphasized the need to remain strong. The Army had become too deeply intertwined with American life and security to be reduced again to a constabulary force. Moreover, the time was not far off when new conflicts would demonstrate the limits of atomic power and prove that ground forces were as necessary as they had been in the past.