Assertion: rectangular ditch | /r/HasAspect | a 1- to 2-meter berm
Facets:
value: on their friendly side
type: LOCATION
Source sentences:
text: Rectangular ditches should have a 1- to 2-meter berm on their friendly side which serves to increase the obstacle height, decrease traction to crossing tanks, greatly impede breaching with scissor-type bridges, and keep the enemy from pushing the soil back into the ditch without exposing their dozers or tanks with plows.