Yes!

Loose Formation takes effect first as it triggers upon declaring the Action. Then Effective Range applies.

Only Regiments that are in the path of the Charging Regiment are pushed. When another Regiment is directly behind the Target Regiment there is no need to move as it does not interfere with the Charge Move.

 Different cases of Re-Rolls are handled as follows:
a) When one ability calls you to Re-Roll all fails and another to Re-Roll all successes the abilities cancel out.
b) When one ability calls you to partial Re-Roll fails (e.g. Re-Roll 1’s) and another to partial Re-Roll successes (e.g. Re-Roll 6’s) the abilities cancel out.
c) When one ability calls you to Fully Re-Roll successes/fails and another to partially Re-Roll successes/all fails then partial Re-Rolling is ignored.

Yes. 
a) As per the Zonal Terrain Rules “When a Stand has any part of it within those extents, then it is considered to be within this piece of Zonal Terrain.” 
b) As per the Obscuring Rules “A Stand drawing Line of Sight through this piece of Zonal Terrain as part of a Volley Action and/OR Targets a Regiment with all of its Stands in a piece of Obscuring Zonal Terrain, halves the X value in its Barrage (X) Special Rule (rounding up) to a minimum of 1.”
c) As “in a piece” is defined as “within” by Zonal Terrain Rules you would benefit from Obscuration through the Zonal Terrain’s Special Rules regardless of whether any line drawn from the Volleying Regiment has been interrupted by Obscuring terrain or not.

As long as the Charge Distance is enough to successfully Charge – the actual distance traveled does not matter as long as Contact is maximized.

When you Charge an Objective Marker you are in Contact with it as if you have Charged an Enemy Regiment and therefore cannot Volley, Charge or March away. You can Withdraw and then continue acting as usual.

Rules As Written you can. The ability to March or Charge through an Objective Marker is not affected by whether it is in contact with a Regiment or not.

In an instance where multiple game entities are Always able of something the rules cancel each other out regardless of how many entities are on each side.

Always supersedes Never/Cannot. If a Rule mentions that a Regiment is Always able of something, then that supersedes Rules that mention “Never”, Cannot or indirectly remove the ability to do something

Any kind of move triggers Dangerous and Perilous terrain as the Special Rules for these Terrain types requires a Regiment “moving” in or through it not performing a particular Action.

When a Regiment performs a Withdraw Action is only considered to have performed a single Action, that is Withdraw. The individual steps taken to physically move the Regiment and resolve the Withdraw Action follow the Reform and March rules without also turning a Withdraw Action into a Reform and a March as well. For all intents and purposes the Regiment counts as having performed a single Withdraw Action.

Yes. So long as the Regiment with Lethal Demise is Engaged with an Enemy Regiment, all Wounds they suffer from failed Defense Rolls from an Engaged Enemy Regiment will cause a Hit from the Lethal Demise Special Rule, and will be inflicted on the Enemy Regiment that caused the Wound(s).

The effects of Inspiration do not stack. If a Regiment has gained the benefits of being Inspired then applying that same Inspiration bonus again, no matter the source of the bonus, will not cause it to stack.

Whenever you compare a dice roll to a Characteristic, it is referred to as a Characteristic Test.

Whenever a Regiment performs an Action, every Stand in that Regiment is considered to be performing that Action. This does not include Character specific Actions.

E.g. If the Regiment performs a Charge Action then all Stands in the Regiment, including Character Stands count as having performed that Action. On the other hand, if a Character Stand has performed a Duel Action, the other Stands in the Regiment do not count as having performed a Duel Action.

 When performing a Volley Action (when range attacks cause Morale Tests) or Casting Spells that cause direct Hits against a Regiment’s Flank or Rear, that Regiment does not Re-Roll successful Morale Tests.

Yes, all Stands including Character Stands are affected by Draw Events and Special Rules and/or their effects, bestowed upon the Regiment during the game. 

You announce which Character Stand will join which Regiment for your entire Army right at the start of the first Reinforcement phase in the game. This also means that if attaching a Character Stand to a Regiment confers certain abilities, these count as if they have been bestowed upon the Regiment during the game.

When a Regiment is called to roll its Reinforcement Roll and a rule asks that this Roll is resolved under different conditions that the rest of this Regiment’s Class, make its Reinforcement Roll separately.

Priests are Casters and therefore both count for Enemy Interference.

No. You must activate a Men-at-Arms Regiment that has not Activated yet unless none is available to Activate.

No. This is an unintended interaction and wording will be updated to reflect this.

The Rule will be reworded as follows: You may select a Household Knight Regiment in this Character’s Warband to gain the [Veteran] Battlefield Role if they do not already have it.