Interesting, but yes, thinking about it, the movie did not contain any jungle scene. Except from a helicopter? But I thought also some other scenes are quite tropical. All staged? Impressive.
The link I already gave above lists all locations for FMJ, with map pin and picture: https://www.latlong.net/location/full-metal-jacket-locations...
> Full Metal Jacket was filmed in Bassingbourn (for Parrish Island), Beckton Gas Works, Cliffe, Epping Forest, Isle of Dogs, Pinewood Studios, RAF Swinderby and The Broads.
And here's another description of several locations and which scene they're in:
https://giggster.com/guide/movie-location/where-was-full-met...
The most immersion breaking part of Dr Strangelove for me is always the outside shot of the ground assault on the "American" base which architecturally is so obviously British it snaps me out of the film each time.