I tried to make it sound official but this is just how I imagine them doing it:
X-Wing GROUND BATTLES is a new format, similar to EPIC format. In EPIC you could have 5 EPIC points. In Ground Battles you can have 5 GROUND points for every 100 points per battle. Some units will be valued at more than 1 Ground Point. In addition to GROUND points, each GROUND unit also costs squad points just like every other unit in the game. Ground units are typically cheaper than air units, to make up for their vulnerability and lack of mobility.
Unlike a standard battle, GROUND battles are won when the other side's ground units are destroyed. You can lose even if you have ships flying in the air. Therefore you must bring at least one ground unit, but may want to bring more to increase your chances of winning.
Ground Units: Most ground units will have weak attack dice (1 or 2), but will gain additional dice when attacking other GROUND units - meant to indicate the difficulty of hitting a flying target from ground. There will be exceptions however, such as anti air turrets which will be weaker vs ground, conversely.
Stationary Turrets - these will typically cost only 1 ground point each, and represent the first deployable unit in X-Wing which does not move (though some may have limited movement capability in the future). The cheapest turret comes in at only 9 points.(Squad points, not GROUND points).
AT-ST - These will cost 3 ground points each. They will use a standard small base, and have the first ever BACKWARD maneuver. It'll be red however. Base model is 18 points.
AT-AT - this will be inbetween the Falcon and the GR-75 in size, but most of it's size will be in it's height. It will have a new custom base, but will use the standard Huge ship maneuever tool and will have a weak dial. It will have a red zero movement option. The AT-AT costs 5 Ground Points. The base model will be 30 points. Named Pilots can go up to the early 40s.
Atmospheric Craft -
Atmospheric craft will debut in the GROUND BATTLE Wave - these craft are not GROUND craft however, and therefore may be used in standard games (Consider those battles to be in atmosphere instead of deep space - and consider buying one of the new Bespin Play Mats to represent this!)
Some examples are: Bespin Cloud Car, and Rebel Airspeeder / Snowspeeder.
Strategy - You'll want to have a comfortable blend of ground forces and air forces in your build. Spend too little on ground forces and your opponent might defeat you in a single turn. Spend too much on ground forces and you might not have enough maneuverability to actually destroy your opponent. Strong ground units like the AT-AT offer a lot of hull, and can help prevent your opponent from winning quickly, but they are also expensive and slow.


