No. Unless the unit itself or the scenario being played has a special rule that changes the way in which Ambushers arrive, you must roll for their arrival during each of your turns, from round two onwards. However, any special rules that affect the arrival of Ambushers which take effect after the Start of Turn sub-phase but before the Compulsory Moves sub-phase may be used as normal, regardless of the result of the Ambushers roll.

A rule such as Armour Bane (X) can have no effect if no roll To Wound is made. In such cases, you may choose to roll To Wound as normal in the hope of improving the weapon's AP characteristic, but if you do the effect of Poisoned Attacks is lost and you must accept the result of the roll To Wound.

No.

Yes.

Yes. Counter Charge is a rule that represents the skill and ferocity of the rider, not their mount. In other words, not every rider is willing or able to perform a counter charge, regardless of their mount.

No.

Yes. When a unit Counter Charges, it risks exposing its flanks or rear to the enemy, such are the perils of bravado.

No. A unit's troop type doesn't change when joined by a character.

As stated in the Counter Charge special rule, a model that makes a Counter Charge moves D3+1".

Yes. A unit that Gives Ground is not a fleeing unit.

Note that, as mentioned previously, should any part of a unit cross beyond the edge of the battlefield whilst it is Giving Ground, the entire unit is removed from play and counts as having been destroyed. It is intentional that a Drilled unit might be able to avoid this fate.

Yes. If a model has the Fly (X) special rule, the number given in brackets is essentially a second Movement characteristic. Any effect that modifies one will modify both.

No. A model that has more than one version of the Fly (X) special rule essentially has two Movement characteristics it can use when flying. Of these, you may use the best.

No. Models with the Fly (X) special rule only fly whilst moving. In other words, such models are considered to have landed on the ground whilst the fighting takes place, and must use their given Movement characteristic to determine if they are close enough to the enemy to fight.

No. Impact Hits are only made by a mount, not by its rider(s). In the case of a chariot, Impact Hits are made by the chariot itself, not by the beasts that draw it. If a rider has their own Impact Hits (X) special rule, these are made separately by the rider.

If it is able to use the greater, then yes, it must (tactically, you might not want it to, but a Frenzied Lord of Chaos on a mighty Dragon doesn't care about your tactics!).

No. A unit is either Frenzied or it isn't, multiple instances of Frenzy are not cumulative.

Yes. Even though models that cause Fear are normally immune to it, the rule that Swarms and War beasts Fear models with Flaming Attacks is an exception called out in those troop types' unique rules.

Count only the Unit Strength of the models that cause Fear.

In such cases, use the better armour value (not including the armour value of any characters or champions that have purchased magic items or unique upgrades to improve their armour).

Units move at the speed of their slowest model. Therefore, whilst the unit would suffer no penalty for moving through difficult or dangerous terrain, the character would, potentially reducing how far the entire unit can move.

The rules effectively cancel one another out, meaning the weapon would suffer a -1 To Hit modifier for Moving and Shooting.

No. Whilst units that move randomly do not declare charges, if you wish to move one into contact with an enemy unit, it must fulfil the same criteria as any other charging unit during its movement, as detailed on page 126.

All units move 2" when Giving Ground.

No.

Yes.

No. Stomp attacks are only made by a mount, not by its rider(s). In the case of a chariot, Stomp Attacks are made by the beasts that draw it or, if there are no beasts, by the chariot itself.

The unit ceases to be subject to Stupidity the moment the character leaves the unit.

Because models with this special rule delight in running down cowards who flee before a charge!

No. Models that cause Terror cause Fear in models with the Fear special rule, even though such models are normally immune to Fear.

No. Because models that cause Fear or Terror aren't terrified by Terror causing enemies, they do not suffer the effects of Terror.

No. What’s more, if the unit is formed, it will not be able to make a Vanguard move; the presence of a character without the Vanguard special rule within its ranks prevents it. However, if the unit is in Skirmish formation, it can make its Vanguard move as normal, leaving the character behind.

No. When a character attempts to use a special rule that requires them to make a Leadership test, they must use their own Leadership characteristic and, unless specifically stated otherwise, cannot use any additional special rules they themselves do not have.