Flanders mud flaps, post WW1 use.

[Strangely Brown]

I don't think for a moment the train was used for moving target practice given that the sand & sky targets are for normal application practice; the amount of time lost on a miniature range changing targets along with having to clear rifles often takes up more time than actually firing them.

For those us with a nerdy interest the moving targets of the period would have been the reduced No.5, replaced the year after the picture was taken with the No.6 reduced target.