Hey folks.
I've been going thru and studying up on some of the campaigns my grandfather parcipated in. Below is a picture taken on 20 October 1944 "A-Day" of Operation King II, The Invasion of Leyte Island and the first retaking of the Philipine Islands. The picture is of a TBM Avenger flying over "White" beach during the intial landings (at or around 1000 hrs) after a massive 4 hour long ship based artillery bombardment. As part of the 1st Cavalry Div. my grandfather's regiment was tasked with going in on the initial landing and securing the Tacloban Airdrome, which if you look at the picture, to the extreme right side you'll see the beginings of a peninsula, the airdrome is located on this peninsula. After securing the the airfield with the help of Mechanized reinforcements they moved inland to secure the capitol city of Tacloban itself. Which is, if you look at the picture again, just beyond the neck of the penisula along the coast line. Since this picture is taken at the earliest moments of the landing, it is quite concievible (in my mind at least) that my grandfather is somewhere down there in frame. A few hours after this picture was taken, the now famous picture of Gen. MacArthur and his staff wading ashore was taken. But a little further south on the coastline at "Red" beach instead.
So my question is, can anyone help me to understand the markings or lack there of of markings on this TBM?
I've blown this picture up and played with the contrast and brightness to see if there were any hidden markings that got washed out. But I haven't been able to find any. I thought there might be one just below the national insignia on the rear fuse but that is appearantly a small window.
Can anyone tell if this is a Navy or USMC Avenger?
I've seen another photo of another TBM claimed to be a USMC bird, taken some days or weeks later after this picture at Dulag field, that also appears for the most part markingless. Reason for all this is that I have a TBM Avenger model waiting in my ever growing stash of models and as I soon as I saw this picture I knew this what I wanted to depict.
Now I realize finding out the exact aircraft would be next to impossible but I would be happy with modeling an aircraft from that squadron if at all possible. Thanks in advance for any help.
The Aircraft/Squadron in question:

at Dulag Airfield

Shay
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Semper Fortis