In Defense of the Red Army

[Legbreaker]

Good point re the FASCAM and chemicals.
A well planned minefield should however be designed to channel an attacker right onto the covering guns of the defending force. Fire needs to be available all over the field to prevent unopposed lifting, but any obstacle belt should send send the attacker unconsciously right in front of the machineguns and expose vehicle flanks to AT weapons.

For example, a barbed wire entanglement is not placed parallel to the defenders positions, but is on an angle. The attacker will naturally drift towards the end furthest from their start line, probably bunching up in the process and giving the machineguns an easy target.

As minefields must be marked (with at least a single strand of wire on the enemy side with mine signs every so often) they too have the ability to channel. Note that the wire surrounding a field does not have to be of the same shape as the field - it can be much larger and mislead the enemy regarding the true extent of the danger area.

Anti vehicular obstacles such as dragons teeth could be positioned so that the only clear route requires the vehicle to take a right angle turn and expose their side the the defenders.