Official rule text
19 a Dice are not rolled for units that are being transported by ships that have capacity. b Units that are being transported are removed from the board if the ship transporting them is removed from the board. c Units that are removed are returned to the player’s reinforcements. 41.3 A gravity rift can affect the same ship multiple times during a single movement. 41.4 A system that contains multiple gravity rifts is treated as a single gravity rift. RELATED TOPICS: Anomalies, Movement 42 GROUND COMBAT During the “Ground Combat” step of an invasion, if the active player has ground forces on a planet that contains another player’s ground forces, those players resolve a ground combat on that planet. To resolve a ground combat, players perform the following steps: 42.1 STEP 1—ROLL DICE: Each player rolls one die for each ground force they have on the planet; this is a combat roll. If a unit’s combat roll produces a result that is equal to or greater than that unit’s combat value, that roll produces a hit. a If a unit’s combat value contains two or more burst icons, the player rolls one die for each burst icon instead. 42.2 STEP 2—ASSIGN HITS: Each player in the combat must choose one of their own ground forces on the planet to be destroyed for each hit result their opponent produced.