Which comes first - Op Fire of Minefields

[campsawyer]

While on topic I would ask if leaders are also affected by minefield effects even after combat units have moved ahead of them first?

There was some discussion on this a while back and the ability to send in a lowly LT. to "discover" the minefield. I believe the consensus was it was that leaders and transports, trucks, wagons, etc, but not APC's, were not affected by the mines.