Q: If war engines are included in a formation with normal units, for example a Battle Fortress, is it allowed to be up-to 15cms (5x Starting damage) from the rest of its formation? If it is allowed to be so is it also allowed to be carrying troops at this distance?
A: Yes to both questions.

Q: If a formation has Blast Markers and wants to fire its AA weapon(s) at an enemy air formation, but the only unit that has the range or the LOF to that enemy is the AA unit, is the AA unit suppressed?
A: All ground units are considered to have an LoF to air units so all the units in the formation, not just the AA unit, would be considered to have an LoF to the aircraft formation. If the AA unit is the only unit in the formation that is in range of the aircraft then it would be suppressed. If other units in the formation were in range then they could be considered valid Suppression targets, not just the AA unit. Note that a unit can be suppressed when firing at an aircraft even if it has no AA attack value.

Q: If the closest enemy unit is already engaged (it has two units in base-to-base contact with it) do I still need to Counter-charge that unit or can I Counter-charge another enemy unit?
A: If the closest enemy is already fully engaged, you may carry on the counter charge and try to contact the next closest enemy unit.

Q: If war engines are included in a formation with normal units, for example a Battle Fortress, is it allowed to be up-to 15cms (5x Starting damage) from the rest of its formation? If it is allowed to be so is it also allowed to be carrying troops at this distance?
A: Yes to both questions.

Q: Can units transported by Planetfall (for example Assault troops in a Thunderhawk) disembark as soon as the transporting unit lands?
A: The intent of the Planetfall rule is that units landing via Planetfall get to land for free early in the turn, and then function as if they had been on the table since the start of the turn. This means that they can take their action later in the turn, as they won't have used it up yet - they are literally counted as having done nothing during the current turn.

Units on board WE or other transport can disembark when they land. In the case of a WE, the formation may take an action on the turn it lands, as the process of landing and disembarking is free - in other words, just a way to get the units onto the table as part of the spacecraft’s activation.

Q: Do broken Space Marine units count as having one BM per unit or one-half BM per unit in Assault resolution?
A: One BM per unit.

Q: When Void Shields recharge in formations with multiple units is one dice rolled for the formation or one dice for each unit?
A: When regrouping roll two dice and take the highest as normal. Each pip can be used to remove one Blast Marker or recharge one shield on every unit in the formation that has Void Shields.