Clip 1 is a Holt 5 Ton Artillery Tractor (or maybe 10 Ton). The little tractor in clip 4 is a Holt 12hp.
The lady's skirt in clip 3 looks uncomfortably close to the revolving tracks.
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I agree, one can wonder if had the film continued would we have seen her flopping along behind the track ?
The last two short are unique. Number 3 depicts another Holt 75 with French and what appears to be a Brit sailor tekking along with the vehicle. I suspect it is Macedonia. The last short shows a Holt 120 ( six cylinder ). Thanks, Tadpole.