Some units will have special actions they have to perform or tests they have to make at the start of the turn. Such rules are not common, and their details will be clearly stated in the model's rules. Such actions are performed and tests made during this sub-phase, in an order chosen by the active player.

Sometimes, a scenario may require you to make a test at the start of each turn, or pause to determine if a victory condition has been achieved before playing on. These things are also done now, before the turn begins in earnest.

This sub-phase should also be used as a moment in which to think between turns, during which you can remove stray casualties, errant dice and other bits of gaming detritus that have accumulated. Often, players will have questions to ask their opponent, such as how a special rule works or what a magic item does. This is the perfect time to ask such questions, and an opponent should never begrudge giving answers during this natural pause in the action.