Bloodline, the location of that famous hill is now called Valle Verde Trail located at Barangay Malico, Imugan, Santa Fe Town of Nueva Vizcaya, Northern Philippines. I was deployed in that area in '00. I learned many WWII stories from the natives there. The general area is located surrounding the vicinity where leadership of the then Japanese Imperial Army made its last stand against the combined USAFFE (United States Army Forces Far East) and Filipino Guerrilla forces. So many unsung heroes who fought and died in that place. Your great uncle is surely one of them. Thanks to you and your great uncle's service.Thanks for the pics, HALO99. I recently found out that my great uncle died in the Philippines in 1945. This link is to the online record of the letter to our family informing them that their son had died fighting near the Villa Verde Trail.
I've been scouring battle maps and google earth looking at the rough terrain they were fighting in. This is his Regiment on hill 504 three days before he died.
Here's an example of how southeast asian jungles (dense vegetation + heat +high humidity + extreme weather changes) can affect unacclimatized persons, no matter how fit you are.
Always acclimatize first. Spend some time out of airconditioned places.