First World War field guns

This first photograph shows the wonderful array of equipment accompanying what presumably would have been first world war field guns (type unknown.) There are baskets, shell cases, tracks, ammunition carrying boxes complete with straps &c. &c. Where these photos were taken again is beyond us. There are no inscriptions to the rear. The visible flora, particularly in the photo below, appear north European, with birches [?] predominating among the trees. The moss on the trees is perhaps densest on the side nearest the camera, with the light coming from the right as we look at the image. Any input again would be appreciated...