War Movie scene (most likely Vietnam war) changing boots

Hi everybody..I´m looking for a war movie(probably Vietnam war), which has this scene were camera is constantly shooting these combat boots. One soldier finds them and puts them on and after he´s being shot someone else finds them and puts them on and this goes on a while until the boots are totaly worn out. I´m not sure if it is a 10 min. movie, or just a 10 min. scene from a bigger movie. Thanks for all sugestions

All Quiet on the Western Front

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thanks, really helped me out there