An old Major I knew from the Cheshire Regt would have had the Vickers operator up on a charge. Apparently getting burned by a hot shell case from a Vickers was considered a self-inflicted injury, so gunners would have to work with their sleeves down. However as he is also wearing shorts, he will will probably get away with it.
Lovely figures! Nice poses, including the posing of the vickers numbers' legs. Good sculpting - all round top marks.