Sandbag positions

[RightDeve]

As far as I can tell from the game guide, those are called "dug-in" positions, and they're the same as those tiny "measles-like" infantry holes (foxholes). They are useful only when your troops are stationary at them all the time. And they would lost their function once dug-in troops start moving. They can not be reoccupied again (with the same benefit as foxhole). The same applies with those "sandbag circle" too I think.

That's what I know, correct me if I'm wrong.