US I Corps, Luzon 1945

Discussion in 'US Units' started by Earthican, Jul 23, 2014.

  1. Earthican

    Earthican Senior Member

    For the Luzon invasion in 1945, I found this troop list for US I Corps. I wanted to highlight the support troops found there and contrast the Corps organization in the Pacific with a US Corps in Europe. Information about the US XIX Corps is available here:
    http://www.xixcorps.nl/

    By design there was not a fixed Corps organization but rather units were attached from Army for the expected operations. For this reason there were significant differences in the composition of a Corps in Europe versus the Pacific.

    In Europe a Corps could consist of three or four divisions, up to four field artillery groups, an anti-aircraft artillery group, one or two engineer groups plus supporting ordnance, quartermaster and medical units.

    On Luzon, a campaign most similar to Europe, I Corps had up to four divisions, one field artillery group, an anti-aircraft artillery group, an engineer group plus supporting ordnance, quartermaster and medical units.

    Actual Corps troops consisted of the Corps Headquarters and Headquarters Company and the Corps Artillery Headquarters and Headquarters Battery. A Signal battalion seemed to be required but still may not have been assigned but rather attached.


    I have noticed I Corps is often referred to as "i corps" (sounds like "eye core") -- "One Corps" does seem awkward otherwise "Two Corps", "Three Corps", ... works for me.



    Units cited below are often repeated where they were split-up to support different units or had different assembly areas.

    I tried to provide the full title of as many units I could identify. The proper title and function of others completely evaded me. Feel free to post factual information on these units.

    Common abbreviations
    Engr - Engineer
    Sig - Signal
    FA - Field Artillery
    Ord - Ordnance
    AAA - Anti-aircraft Artillery
    Med - Medical
    Cml - Chemical
    QM - Quartermaster
    MP - Military Police
    Arty - Artillery
    Hq - Headquarters
    Det - Detachment
    Sec - Section
    Plat - Platoon
    Co - Company
    Btry - Battery
    Bn - Battalion
    Gp - Group


    The compostion of I Corps changed through the campaign. Some of the changes to the field artillery and engineers is reflected in these excerpts.

     

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