bigpigeon.us webpage WW II -  Japan  > Philippines Liberated, updated by RAC 4 Oct 2021.

The Philippine Islands liberation began with invasion of the island of Leyte in October 1944 and was followed by the invasion of the main island of Luzon in January 1945. By March 1945, key parts of the Philippines lay in American hands, but limited combat in remote areas continued until the War with Japan ended in August 1945.​
The Philippines Liberated subordinate webpages:
Major United States military units involved were:
  • Sixth Army - General Walter Krueger
  • Eighth Army - General Robert Eichelberger
  • 7th Fleet - Admiral Thomas Kinkaid
  • 3rd Fleet - Admiral William Halsey
  • 5th Air Force - General George Kenney
Overall commander, except for the 3rd Fleet, was General Douglas MacArthur.
The long and bloody liberation of the Philippines in 1944 and 1945 cost nearly 20,000 American lives, and far more lives of both the Japanese enemy and Filipino civilians. Perhaps a quarter of a million died.

​I view the liberation as consisting of four major events:
17 Oct '44 - 26 Dec '44, Sixth Army - The Leyte invasion and subsequent land battle, 3,593 American dead.
23 Oct '43 - 25 Oct '44, 3rd & 7th Fleets - The Battle of Leyte Gulf,  2,800 dead.
15 Dec '44 - 15 Aug '45, Sixth Army - The invasion of Mindoro in December 1944, of Luzon in January 1945, and the subsequent land campaign on Luzon, 10,640 dead.
27 Feb '45 - 15 Aug '45, Eighth Army - The recapture of the southern Philippines, ending with the Mindinao campaign, 2,100 dead. 

The liberation of the Philippines included two major and numerous smaller amphibious landings, several paratroop drops, and grueling land campaigns. It also included what was arguably the largest sea battle in history.

As great as United States losses were, they would have been substantially higher were it not for the support of many thousands of Filipino guerrillas.
The Philippine Islands
The Philippine Islands
The large-scale operations in the Philippines relied on support from a number of advance bases. Counterclockwise from the bottom right on the map:
  • Hollandia, now Jayapura, in the eastern Duth Indies on New Guinea's north coast. 
  • Manus, in the Admiralty Islands.
  • Guam, the southernmost Mariana Island.
  • Ulithi, an atoll in the Caroline Islands. 
  • Peleliu and Anguar in the Palau Islands. Peleliu was not secure until late November 1944.
  • Morotai, in the eastern Dutch Indies.
Philippines Area Map
Philippines Area Map
Sources for the The Philippines Liberated webpage:
  • The webpage header photo, Santo Tomas Prisoners, shows two recently liberated American prisoners of the Japanese who had been held at the Santo Tomas camp in Manila. This Carl Mydans photo, courtesy of https://www.us-japandialogueonpows.org/Santo%20Tomas%20liberation.htm, appeared in the 5 March 1945 issue of Life Magazine. The caption reads "Two starved men sit outside university’s gym-hospital. They are Lee Rogers (left), a retired employee of Cavite Navy Yard, and John C. Todd, a miner.  When Rogers entered Santo Tomas he weighed 145 pounds. Now he weighs 90 pounds. Todd dropped from 178 pounds to 102. Behind them is one of the vegetable gardens which internees grew to keep themselves alive."
  • The Philippine Islands map is from https://history.army.mil/brochures/southphil/southphils.htm.
  • The Philippines Area Map is courtesy of marksremnants.blogspot.com.
  • https://en.wikipedia.org/wiki/Philippines_Campaign_(1944–1945) is a well-written summary of the reconquest of the Philippine Islands.
  • I used the https://en.wikipedia.org/wiki/List_of_battles_with_most_United_States_military_fatalities battle death figures.