If you check the orders of 'battle' for South and Central American Air forces, you'll find a lot of P-47s, P-51s, B-25s, A-26s, C-46s, C-47s, PT-17s, BT-13s, C-45s/AT-11s and AT-6s went south in the ten years after the war. Lesser numbers of F6F, F4U, P-63, P-38, OS2U and PBY went south too. The French used P-39s, P-63s, F6Fs and F4Us/AUs in Viet Nam. Bolivia and Israel had a few B-17s. India had B-24s. The Phillipines got P-51s. China got some too. The Italian Co-Belligerents were using P-39s at the end of the war, and might have kept them for a while; the French did the same with P-38s. About the only country to use P-40s for any length of time after the war was Brazil, but they got theirs long before the war ended. Oddly enough, P-40s are among the more common warbirds, even though they didn't see significant postwar service anywhere.
Lots of surplus-to-requirements aircraft were burned, dumped off the fantail of carriers, stripped and scrapped, or simply abandoned. Anything that was remotely viable in the commercial sense (C-47, C-46, C-45, B-17, B-25, A-20, B-26, B-23, most trainers, and surprisingly enough, quite a few P-40 and P-51) was made available for sale by the RFC, but some types were simply not released, like the B-32. Someone did try to buy one of those for a polar overflight, but the deal collapsed. AT-9s were also sequestered for some reason. OTOH, someone managed to buy the last surviving P-64 and preserve it, and a few O-47s and O-52s made onto the civilian side.
Some of these old birds lingered for a long time. I remember being driven by a scrap yard which was probably adjunct to Moffett Field back about 1962, when we were going to buy my first 3-speed bicycle. The one-acre lot had a pile of miscellaneous equipment in it; front and center was a faded-to-very-light-gray single engined monoplane with a long glasshouse--I wish I could recall clearly what it was, but the only likely alternatives were a TBD, an SB2U or an SNV. Even back then, I would have recognized a TBF or SBD or AT-6. I want to say it was a TBD, but most likely it was an SNV (Vultee Vibrator, naval version). Within the year, the lot was cleared.
Mark Schynert