This piece can be used for any period, from Roman times to the second world war. 
The grass is now painted to blend in with the grass mats. It can be produced to order with the original bright green grass on request. Use with M21A, M22 and M23 to form field fortifications and redoubts for infantry and artillery
 
You can create square or rectangular field defences, for any period with M21, M21A, M22 and M23. 
Suitable for ECW, Crimean War, AWI, ACW.