These are some very basic Guard towers. I'd carve the top wall segment where the soldiers could place there hand on (judging by the height) and extend it throughout inwards and outwards slightly and possibly even with it a separate texture so that they have enough space to place sandbags on it, or a cup of coffee or simply be able to mound an MG there.
On additional observation I believe the roof of that tower should extend on all 4 sides in shown pattern. For you must carve brushes accordingly.
These are some very basic Guard towers. I'd carve the top wall segment where the soldiers could place there hand on (judging by the height) and extend it throughout inwards and outwards slightly and possibly even with it a separate texture so that they have enough space to place sandbags on it, or a cup of coffee or simply be able to mound an MG there.
On additional observation I believe the roof of that tower should extend on all 4 sides in shown pattern. For you must carve brushes accordingly.