The Assault phase

In the Assault phase detachments which are assaulting are allowed to move again. An assaulting detachment can use this extra move to engage an enemy detachment in close combat and short-range firefights.

The player with the initiative is allowed to decide whether he will make his assaults first or second. The player going first then makes his assault moves, and fights out any close combats and firefights that result from these moves. Then the player going second makes any moves and resolves their close combats or firefights.

Moving in the Assault phase is subject to all the rules you used in the Movement phase, except that enemy units may not snap-fire in the Assault phase.