[Charles22]

I know I have often did this in various SP games, where I position infantry or engineers beside my mines. It's a great way to destroy armor that gets immobilized for one. For another it makes it tough on foot units trying to get through.

There is, however a better use in this situation. Often the better thing to do is to place the engineers two hexes back. The main reason I do this is so they easily support the mines, but more importantly because should the enemy get through without removing any mines, if he gets shot up enough, he will retreat right back into the minefied where he is probably more liable to be knicked than he was coming in.