Manila Bay was extremely important for shipping traffic, regardless of who was in control and the island fortress of Corregidor sat mid-way. The need to re-conquer the "The Rock" was imperative to the Allied effort.
The Air Force began its attacks 22 January and by 16 February had dropped 3,125 tons on the three-tier island. That same day, 24 B-24s hit known gun positions and 11 B-25s hit antiaircraft guns and the south coast while 31 A-20s strafed Caballo Island, a mile to the south.
Corregidor 1945... An amazing account of the battle of the retaking of Corregidor
You’re amazing Pierre. Thank you.