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Normal Moves: When a unit makes a Normal Move, each model in that unit can move a distance in inches equal to or less than the Move (M) characteristic shown on its datasheet, but no model can be moved within Engagement Range of enemy models.

Difficult ground: "... subtract 2" from the maximum distance that every model in that unit can move ..."

Normal Move doesn't appear to create a new value to modify, unlike advancing and charging which have rolls to be modified. If you are subtracting 2 (or whatever the situational modifier is) from the distance that a model can move, and that model is moving M" (as per the text of the Normal Move rule), you are modifying M? Because M is never divorced from the distance you end up measuring like advance moves are?

This is mostly in relating to Inexorable Advance, Death Guard, and people debating whether difficult ground impacts the movement stat, which would then be ignored by inexorable advance. Also seems to affect Leman Russ tanks moving over terrain and double firing.

Your movement stat doesn't change, you just don't get to move its full value in certain situations.

Difficult ground is a modifier to the move characteristic, thus ignored by inexorable advance.

 p5freak wrote:
Difficult ground is a modifier to the move characteristic, thus ignored by inexorable advance.

Can you show me in the Difficult Ground rule where the term "Movement Characteristic" is mentioned?

 BaconCatBug wrote:

 p5freak wrote:
Difficult ground is a modifier to the move characteristic, thus ignored by inexorable advance.

Can you show me in the Difficult Ground rule where the term "Movement Characteristic" is mentioned?

The problem is, you can't show that difficult ground directly refers to any or each of the movement values for Normal Move, Advance, or Charge moves. It just says, "subtract 2 from the maximum distance". In the case of advance and charges, the maximum distance is a rolled value (usually). In the case of Normal Move, the maximum distance you can go is M", there isn't another value to modify as far as I can tell.

 BaconCatBug wrote:

 p5freak wrote:
Difficult ground is a modifier to the move characteristic, thus ignored by inexorable advance.

Can you show me in the Difficult Ground rule where the term "Movement Characteristic" is mentioned?

When a unit makes a normal move, each model in that unit can move a distance in inches equal to or less than the move characteristic. Difficult ground says you subtract 2" from the maximum distance that every model in that unit can move, that maximum distance is the move characteristic. You subtract 2" from the move characteristic, so its a modifier.

 p5freak wrote:

 BaconCatBug wrote:

 p5freak wrote:
Difficult ground is a modifier to the move characteristic, thus ignored by inexorable advance.

Can you show me in the Difficult Ground rule where the term "Movement Characteristic" is mentioned?

When a unit makes a normal move, each model in that unit can move a distance in inches equal to or less than the move characteristic. Difficult ground says you subtract 2" from the maximum distance that every model in that unit can move, that maximum distance is the move characteristic. You subtract 2" from the move characteristic, so its a modifier.

Just because "Movement Characteristic" ⇒ "Maximum Distance The Unit Can Move" does not mean the reverse is true.

Movement characteristic doesn't become the maximum distance, it is the maximum distance for Normal Move. The Normal Move blurb sets it to the move characteristic and the summary lays it out even more plainly.

The question is whether this is overwritten by something else somewhere else.

Called it.

So out of interest, if that is not a modifier what actually modifies a units move characteristic?

I am sure there are some, but I can't think off the top of my head (Probably since I haven't got to play since summer due to lockdown)

Doohicky wrote:
So out of interest, if that is not a modifier what actually modifies a units move characteristic?

I am sure there are some, but I can't think off the top of my head (Probably since I haven't got to play since summer due to lockdown)

Thunderfire cannon/whirlwind, Admech bomber, some Thousand Sons spells

 BaconCatBug wrote:

Doohicky wrote:
So out of interest, if that is not a modifier what actually modifies a units move characteristic?

I am sure there are some, but I can't think off the top of my head (Probably since I haven't got to play since summer due to lockdown)

Thunderfire cannon/whirlwind, Admech bomber, some Thousand Sons spells

Tanglefoot grenade (when used in the Movement phase only).

Also Tenebrous Curse for Raven Guard.

One of my regular opponents uses this a lot against my Khornites...

"Hammer Blow" stratagem for Stormtrooper Detachments.