Units now disembark at the start of the Movement phase, before the Transport moves, but can then move, shoot and fight normally in that turn.
Vehicles can also advance, and charge into melee. Overwatch is automatic, and applies to all units that attempt a charge - until an enemy unit is within 1".
So say your death company in a rhino gets out at the start of the move - the rhino optionally moves and advances, then charges first. If it survives overwatch, the death company can now charge the same target without any overwatch risk. Applicable to all foot assault units with a mobile transport.
Ark - sadly not how it works anymore. You declare ALL your charges, and you get to overwatch everything charging you. There's no more restriction - in fact, it explicitly says you can fire many times a turn.
Not how I read it. You choose a unit to charge with, choose a target, resolve overwatch, make charge move, and then "...Once you've moved all the models in the charging unit, choose another eligible unit and repeat the above procedure until all eligible units that you want to make charge moves have done so."
Edited by Tahaal, 02 June 2017 - 08:54 AM.