I presume that it would not be in Scott. The Scott #461 was overprinted by the Philippine Philatelic Club for a stamp exhibition. Details can be found in the entry of September 22, 2012 in this blog entry:
Just to be clear: When Americans see the phrase "D-Day," we tend to think of the landing at Normandy on June 6, 1944. The date commemorated on this overprint (or cancellation) is when Allied forces landed to retake the Philippines in October 1944. I had to look it up to make sure. I never knew that landing also was referred to as D-Day, although I have seen the footage of Gen. MacArthur wading ashore.