These are extra abilities that can be bought for units at an additional victory point cost. Like the EW rules, they add an extra dimension but at the cost of more complexity. Anti-Aircraft VP Upgrade: +1 No Ground vs. Air penalty. Can be added to Laser, MG or Rocket armed Class I,II and IV units. Counter-Battery Radar VP Upgrade: +2 Detects source location of artillery fire aimed at hex within 40 hexes of the CB radar unit during spotting phase. On following turn, owning player can direct artillery fire at enemy guns. This can get really complicated, see the Artillery Duel rules [coming soon - Francis]. Can also pass location to friendly aircraft. IR Sight VP Upgrade: +1 An infrared sighting system allows the unit to spot targets in adverse conditions, such as smoke. Whenever a unit is attacking through smoke it uses a -2 to-hit rather than the higher penalties listed. A unit with an IR sight may use the sight for its electronic warfare abilities as well, if it has any. Point Defence VP Upgrade: +3 The PD upgrade is not an upgrade as such, but the addition of a self contained turret mounted on the upper deck of the vehicle to give it a large arc of fire. It contains its own laser, search radar and fire control system, and only needs power from the mounting vehicle. It will automatically attack any rocket/artillery projectile aimed at the vehicle. It may be used to block rockets, missiles, panzerfausts, bombs and artillery. When the vehicle is attacked, roll 1d6 for each attack. Bombs and rockets are destroyed on a 1-5, missiles and panzerfausts a 1-4. For artillery, roll 1d6. On a 1-3, subtract 1 from the Strength of artillery, on a 4-5 subtract 2, and on a 6 subtract 3. If the artillery strength is reduced to zero then it totally blocked. The PD unit has a range of 6 hexes and may attempt to block one artillery attack OR any number of projectile attacks. Attacks fired during overrun or from adjacent hexes may NEVER be blocked (not enough tracking time). Units with multiple PD systems may not roll twice against the same projectile attack, but can defend against the same or multiple artillery attacks. The PD may not be used in forest or city/building hexes, and a vehicle may only carry one system per hits rating. A PD may not be used for offensive and attack purposes. Radar/Radio Direction Finder VP Upgrade: +2 This allows a unit to locate functioning Anti-aircraft, Headquarters, ECM/Jamming, Remote Controller, Point Defence and Counter-battery units. Instead of making an attack, it may attempt to electronically spot one unit. The spotting player must choose one of the above types to spot and declare which unit is making the attempt. The opposing player counts the range to the spotter, divides by ten (round up) and tells the spotting player what the number is, and he must roll over that number on 1 die. Spotter gets a +1 for each additional spotting unit and +1 if the target is stationary. Once a unit is spotted, its identity is known for the rest of the game.