On page 6 German Info 7 LW Fld DIV A21.06 2-1-6 LW MORTAR CO (4/I) Shouldn't that be set up on the Hill in hex A 22.06? And not the dale?
Especially since the rules make a point of holding them thar hills!
It's a mortar unit with a low defense rating and is still in a hill terrain hex. It's better behind the front and barrage using spotters.