The air raids resulted in the mass destruction of infrastructure and military hardware on the islands, most notably at Magong due to the presence of major Japanese naval bases in the city.

In view of the barren land and large population in Penghu, it became difficult for the Japanese to supply grain by sea, leading to a real risk of food shortage.

In the early days Japan chose Magong as the site for the construction of a major naval headquarters, and forced the residents to relocate to other places.

In addition to auxiliary support facilities such as radio stations, port warehouses, and oil tanks, the hinterland of the base also became the main strategic target for the Allied fighters to attack Penghu.

[5] The mission to attack Penghu on 12 October 1944, was carried out by the USS Lexington and the USS Essex of the Fast Carrier Task Force; aircraft involved in the battle, including Grumman F6F Hellcats, Curtiss SB2C Helldivers and Grumman TBF Avengers, from dawn to dusk respectively weapons such as machine guns, rockets, bombs, and air-dropped torpedoes, launched a total of four waves of offensives against Penghu Cetian Island Naval Base, Zhumushuhui Airfield and surrounding facilities.

[5] At the beginning of January 1945, in preparation for the invasion of Lingayen Gulf, the Fast Carrier Task Force once again attacked various places in Formosa and Penghu.