One of the stamps shows the liberation of Los Banos. The raid at Los Baños in the Philippines on 23 February 1945, by a combined U.S. Army Airborne and Filipino guerrilla task force, which resulted in the liberation of 2,147 Allied civilian and military internees from an agricultural school campus turned Japanese internment camp, was celebrated as one of the most successful rescue operations in modern military history. It was the second precisely-executed raid by combined U.S.-Filipino forces within a month, following on the heels of the Raid at Cabanatuan at Luzon on January 30, in which 513 Allied military POWs had been rescued.
The Liberation of Cabanatuan is also shown on one of the stamps. The Raid at Cabanatuan in the Philippines on 30 January 1945 by US Army Rangers, Alamo Scouts and Filipino guerrillas resulted in the liberation of 511 prisoners of war (POWs) from a Japanese POW camp near Cabanatuan and was a celebrated historic achievement involving Allied special forces during World War II.
Edward Dmytryk's 1945 film Back to Bataan starring John Wayne opens by retelling the story of the raid on the Cabanatuan POW camp. The raid was recreated, with great attention to historical accuracy, in the 2005 John Dahl film The Great Raid.
The other stamps celebrate the liberation of other places in the Philippines, such as UST, which I discussed in an earlier post.
Below are two other covers.