TI4 Rules DeskTwilight Imperium 4
Living Rules Reference · v2.0
18

Combat (Attribute)

Combat is an attribute of some units that is presented on faction sheets and unit upgrade technology cards.

During combat, if a unit’s combat roll produces a result equal to or greater than its combat value, it produces a hit.
If a unit’s combat value contains two or more burst icons, instead of rolling a single die, the player rolls one die for each burst icon when making that unit’s combat rolls.

Source: Twilight Imperium: Fourth Edition — Living Rules Reference v2.0 (September 22, 2020), page 13. Rules text reproduced verbatim; the rulebook’s diagrams are omitted.