- Manila: The capital city and the site of the Battle of Manila (1945).
- Bataan: The Bataan Peninsula, where the Battle of Bataan (1942) took place.
- Corregidor: A small island in Manila Bay that was the last American stronghold in the Philippines until its surrender in 1942.
Visayas:
- Cebu: The island of Cebu, where the Battle of Cebu (1942) occurred.
Mindanao:
- Davao: The city of Davao and its surrounding areas, where Japanese troops were concentrated.
Other Areas:
- Leyte: The island of Leyte, where the Battle of Leyte Gulf (1944) was fought, considered one of the largest naval battles in history.
- Samar: The island of Samar, where the Battle of Samar (1944) took place, a part of the larger Leyte Gulf engagement.
- Palawan: The island of Palawan, which saw fighting in 1944-1945.