Japanese invasion of Lamon Bay

Japanese Landings in Lamon Bay
Part of the Philippines campaign (1941–1942), Pacific Theater

A map of Luzon Island showing Japanese landings and advances from 8 December 1941 to 8 January 1942.
Date21–23 December 1941
Location
Result Japanese victory
Territorial
changes
South Luzon Force was ordered to retreat to Bataan after Japanese secured a beachhead in Mauban, Atimonan, and Leal.
Belligerents
 Japan

 United States

Commanders and leaders

Susumu Morioka

Nariyoshi Tsunehiro

George M. Parker
Albert Jones

Simeon De Jesus
Units involved

Ground units:
Japanese Fourteenth Army

  • 16th Division
    • 9th Infantry Regiment
    • 33rd Infantry Regiment
      • 2nd Battalion, 20th Infantry
    • 22nd Field Artillery
    • Armored Detachment
    • Artillery Batteries

Air units:
Japanese 5th Air Army

  • 8th Air Regiment

Naval units:
Japanese Imperial Navy

  • 2nd Fleet

Ground units:
Philippine Commonwealth Army

  • 51st Infantry Division
    • 51st Infantry Regiment (less 1st Bn)
    • 51st Infantry Regiment
    • 52nd Infantry Regiment
    • 51st Field Artillery Regiment
    • 1st Infantry Regiment (Regular)

Philippine Constabulary

  • 51st Provisional Infantry Brigade (PC)

Air units:
US Army Air Corps

  • 21st US Pursuit Squadron
Strength
7,000 20,000

The Japanese Invasion of Lamon Bay (Filipino: Paglusob ng mga Hapones sa Look ng Lamon) was a secondary mission in the Japanese invasion of Lingayen Gulf during the 1941-1942 Japanese conquest of the Philippines. Securing the coast southeast of Manila would complete the Japanese encirclement of the capital and would act as a diversionary attack from the Japanese main invasion force from the north.[1]

  1. ^ "The Main Landings". Retrieved 18 March 2014.

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