Where can I find after action reports, ww2 philippines.?

I believe Mindanao was the responsibility of the 6th Army. Their unit history might have something on smaller units(regiments,battalions,etc.) and where they were involved in firefights on what days. They may even have a diary of each days events. It may not go so far as to say something about Sgt.Stuart but if it says there was heavy fighting with the 86th Tank Battalion near Davao City on March 14th that would certainly give you a definite place to look,don't you think?