Rule book highlighted relevant part
SPECIAL RULE
1.4.2 Abilities Used At Start Of Turn/Action
Quote:
Some units have special abilities that are specified as taking effect at the beginning of the turn. These effects are resolved before the Strategy roll. Similarly, abilities that are used at the start of an action can be taken before the Initiative roll is made or the action chosen. If both players have effects for the beginning of the turn, take turns resolving them, alternating between players for each subsequent effect until all effects are resolved. The player with the higher strategy rating decides which player will go first.