You may be interested in the National Memorial Arboretum at Alrewas, Staffordshire, England. The linked page has a photo of "Shot at dawn", a statue comemorating those men and boys shot for desertion in WWI. If you check the sitemap, it's in area C.

Alrewas is not far from the forest of Cannock Chase, where the German military cemetary is situated, with the graves of German POWs and others who died in or over Britain in both wars; the Chase is also home to the memorial to the Katyn Forest massacre.

Steve