If you're interested in the Shot At Dawn memorial in the National Memorial Arboretum, note that it's in Alrewas, near Lichfield, Staffordshire, not Litchfield, as it says in the SAD website (there are several Litchfields up and down the country). Also, there are the German Military Cemetary and the Katyn Forest Memorial, both in Cannock Chase forest, also in Staffordshire.