- A spotter figure may be added to a mortar unit.
- A mortar unit with a spotter figure that scores a hit in range combat will place a range marker on the enemy unit. A range marker is not placed on the hex, when the unit retreats from its hex.
- When a unit with a range marker is targeted again by any mortar ranged combat, the mortar unit will battle with 1 additional die and Deadly Die side symbols rolled will score a hit.
- If a unit with a range marker in its hex moves, or retreats, or is eliminated, remove the range marker from the hex.