The Philippines Campaign

Battle of Bataan

From 7 to 14 January 1942, the Japanese concentrated on reconnaissance and preparations for an attack on the Main Battle Line from Abucay to Mount Natib to Mauban. At the same time, in a critical mistake, they also relieved the 48th Division, responsible for much of the success of Japanese operations, with the much less-capable 65th Brigade, intended as a garrison force. The Japanese 5th Air group was withdrawn from operations on 5 January in preparation for movement with the 48th Division to the Netherlands East Indies.[49] U.S. and Filipino forces repelled night attacks near Abucay, and elements of the U.S. Philippine Division counterattacked on 16 January. This failed, and the division withdrew to the Reserve Battle Line from Casa Pilar to Bagac in the center of the peninsula on 26 January.

The 14th Army renewed its attacks on 23 January with an attempted amphibious landing behind the lines by a battalion of the 16th Division, then with general attacks beginning 27 January along the battle line. The amphibious landing was disrupted by a PT boat and contained in brutally dense jungle by ad hoc units made up of U.S. Army Air Corps troops, naval personnel, and Philippine Constabulary. The pocket was then slowly forced back to the cliffs, with high casualties on both sides. Landings to reinforce the surviving pocket on 26 January and 2 February were severely disrupted by air attacks from the few remaining FEAF P-40s, then trapped and eventually annihilated on 13 February.

A penetration in the I Corps line was stopped and broken up into several pockets. General Homma on 8 February ordered the suspension of offensive operations in order to reorganize his forces. This could not be carried out immediately, because the 16th Division remained engaged trying to extricate a pocketed battalion of its 20th Infantry. With further losses, the remnants of the battalion, 378 officers and men, were extricated on 15 February. On 22 February, the 14th Army line withdrew a few miles to the north and USAFFE forces re-occupied the abandoned positions. The result of the "Battle of the Points" and "Battle of the Pockets" was total destruction of all three battalions of the Japanese 20th Infantry and a clear USAFFE victory.

For several weeks, the Japanese, deterred by heavy losses and reduced to a single brigade, conducted siege operations while waiting refitting and reinforcement. Both armies engaged in patrols and limited local attacks. Because of the worsening Allied position in the Asia-Pacific region, U.S. President Franklin D. Roosevelt ordered MacArthur to relocate to Australia, as Supreme Allied Commander South West Pacific Area. (MacArthur's famous speech regarding the Philippines, in which he said "I came out of Bataan and I shall return" was made at Terowie,

South Australia on 20 March.) Wainwright officially assumed control of what was now termed United States Forces in the Philippines (USFIP) on 23 March. During this period, elements of the U.S. Philippine Division were shifted to assist in the defense of other sectors.

Beginning 28 March, a new wave of Japanese air and artillery attacks hit Allied forces who were severely weakened by malnutrition, sickness and prolonged fighting. On 3 April, the Japanese began to break through along Mount Samat, estimating that the offensive would require a month to end the campaign. The U.S. Philippine Division, no longer operating as a coordinated unit and exhausted by five days of nearly continuous combat, was unable to counterattack effectively against heavy Japanese assaults. On 8 April, the U.S. 57th Infantry Regiment (PS) and the 31st Division PA were overrun near the Alangan River. The U.S. 45th Infantry Regiment (PS), under orders to reach Mariveles and evacuate to Corregidor, finally surrendered on 10 April 1942. Only 300 men of the U.S. 31st Infantry successfully reached Corregidor.

THE RETURN TO THE PHILIPPINES (1944-1945)

Leyte

On October 20, 1944, the U.S. Sixth Army, supported by naval and air bombardment, landed on the favorable eastern shore of Leyte, one of the islands of the Visayas island group, northeast of Mindanao. The Japanese miscalculated the relative strength of the naval and air forces, and they attempted to destroy the landing. This brought about the massive sequence of battles called the Battle of Leyte Gulf, fought on October 23 through October 26. This decisive victory by the U.S. Navy, its Fast Carrier Task Force, its surface fleet, and its submarines effectively destroyed the remainder of the Imperial Japanese Navy (IJN), which had already lost all of its effective aircraft carrier forces. The IJN had four of its carriers sunk (ships with depleted air squadrons – which were used only as decoys), numerous battleships and heavy cruisers, and a large number of light cruisers and destroyers. The IJN was never able to fight a major battle after this.

The U.S. Sixth Army continued its advance from the east, as the Japanese rushed reinforcements to the Ormoc Bay area on the western side of the island. While the Sixth Army was continually reinforced, the U.S. Fifth Air Force was able to devastate the Japanese attempts at air attacks, and also provide much support to the Army's ground troops.

The Filipino guerrillas also performed valuable service in maintaining public order and in keeping the roads and highways free of congestion. After the American beachheads were established, the Leyte guerrilla groups were attached directly to the Sixth Army corps and divisions to assist in scouting, intelligence, and combat operations. With the initial U.S. Sixth Army landings on the beaches at Tacloban and Dulag, Colonel Ruperto K. Kangleon's units went into action. They dynamited key bridges to block Japanese displacement toward the target area; they harassed enemy patrols; and they sabotaged supply and ammunition depots. Information on enemy troop movements and dispositions sent from guerrilla outposts to Kangleon's Headquarters was dispatched immediately to Sixth Army.

During many torrential rains and over difficult terrain, the advance continued across Leyte and onto the major island of Samar, just north of Leyte. On December 7, 1944, the U.S. Army units made another amphibious landing at Ormoc Bay and, after a major land and air battle, the landing force cut off all Japanese ability to reinforce and resupply their troops on Leyte. Although fierce fighting continued on Leyte for months, the U.S. Army was always in control.

Mindoro

The U.S. 6th Army's second major target to attack was Mindoro. This large island is directly south of Luzon and Manila Bay, and MacArthur's main goal in taking it was to be able to construct airfields on it for fighter planes that could dominate the sky over the most-important Philippine Island, Luzon, and its major seaport and capital city of Manila.

The Seventh Fleet's large invasion convoy from Leyte to Mindoro came under strong attack by kamikazes, but they could not delay the American invasion of Mindoro. Mindoro was only lightly occupied by the Japanese Army, and much of it was held by Filipino guerrillas, so Mindoro was quickly overrun. U.S. Army engineers set about rapidly constructing a major air base at San Fabian. Besides being close to Luzon, Mindoro has another advantage: good flying weather nearly all the time, because this is a part of the Philippines that is relatively dry – quite unlike Leyte which receives torrential rains most of the year, not only giving it poor flying weather, but making it very muddy and difficult to construct airfields.

San Fabian was also the location of another breakthrough: the first appearance during the War in the Pacific of USAAF squadrons flying the fast, long-range P-51B Mustang fighters – far superior to anything that the Japanese Army or Navy had.

Mindoro was a major victory for the 6th Army and the USAAF, and it also provided the major base for the next move of MacArthur's 6th Army: the invasion of Luzon, especially at Lingayen Gulf on its western coast.

Luzon

Troops of the 185th Inf., 40th Div., take cover behind advancing tanks while moving up on Japanese positions on Panay Island

On December 15, 1944, landings against minimal resistance were made on the southern beaches of the island of Mindoro, a key location in the planned Lingayen Gulf operations, in support of major landings scheduled on Luzon. On January 9, 1945, on the south shore of Lingayen Gulf on the western coast of Luzon, General Krueger's Sixth Army landed his first units. Almost 175,000 men followed across the twenty-mile (32 km) beachhead within a few days. With heavy air support, Army units pushed inland, taking Clark Field, 40 miles (64 km) northwest of Manila, in the last week of January.

Two more major landings followed, one to cut off the Bataan Peninsula, and another, that included a parachute drop, south of Manila. Pincers closed on the city and, on February 3, 1945, elements of the U.S. 1st Cavalry Division pushed into the northern outskirts of Manila and the 8th Cavalry Division passed through the northern suburbs and into the city itself.

As the advance on Manila continued from the north and the south, the Bataan Peninsula was rapidly secured. On February 16, paratroopers and amphibious units simultaneously assaulted the islet of Corregidor. It was necessary to take this stronghold because troops there can block the entrance of Manila Bay. The Americans needed to establish a major harbor base at Manila Bay to support the expected invasion of Japan, planned to begin on November 1, 1945. Resistance on Corregidor ended on February 27, and then all resistance by the Japanese Empire ceased on August 15, 1945, obviating the need for an invasion of the Japanese Home Islands.

Despite initial optimism, fighting in Manila was harsh. It took until March 3 to clear the city of all Japanese troops, and the Japanese Marines, who fought on stubbornly and refused to either surrender or to evacuate as the Japanese Army had done. Fort Drum, a fortified island in Manila Bay near Corregidor, held out until 13 April, when a team of Army troops went ashore and pumped 3,000 gallons of diesel fuel into the fort, then set off incendiary charges. No Japanese soldiers in Fort Drum survived the blast and fire.

In all, ten U.S. divisions and five independent regiments battled on Luzon, making it the largest campaign of the Pacific war, involving more troops than the United States had used in North Africa, Italy, or southern France.

Casualties

U.S. Army and Army Air ForcesLocation Killed Wounded Total

Leyte 3,593 11,991 15,584Luzon 8,310 29,560 37,870Central and Southern Philippines 2,070 6,990 9,060Total 13,973 48,541 62,514

Other Allies

 Australia Philippine Commonwealth  Mexico

JapaneseLocation Killed Captured Total

Leyte 80,557 828 81,385Luzon 205,535 9,050 214,585Central and Southern Philippines 50,260 2,695 52,955Total 336,352 12,573 348,925

Map of the Philippine Islands

Map of the Philippine Islands

Route of the Bataan Death March

Route of the Bataan Death March

American soldiers who were too slow, weak or sick to continue marching were executed by Japanese

Kamikaze pilots were first used during the Battle of Leyte Gulf; the Second advance of Americans in the Philippines