If a unit enters a hex containing a minefield marker, it must immediately end its movement and check for casualties: Roll four attack dice, with “4,” “5,” and “6” results inflicting normal hits on the unit (no defense dice are rolled). Then fatigue the unit. Squads with the engineer specialization do not check for casualties, but are still fatigued. Units that attack when in a minefield hex do so at half firepower. A unit moving from a minefield hex may only move to an adjacent hex during its activation, regardless of its number of available movement points.
There may be a maximum of one minefield marker per hex.