That is exactly my point. Just because you know the MF to be expended doesn't mean your move is an Assault move because you announced it as such, especially if it exceeds your ability to do so. When entering upon wire you announce your intention to enter using assault move and move beneath the wire as a single move but that does not mean you are able to do so (your MF spent are just unknown until after the dr). The move into the location and beneath the wire are a single movement and announced as such, there is no such thing as assault moving into the location (step 1) and moving beneath the wire (step 2). If the A-Mv is successful, happy days; if not, probably not so much. The defender reserves the right to witness the full MF expended before committing to def. fire, you don't get to say "I'm entering using assault move", now I fire and then, "OH BTW I'm attempting to move beneath the wire."
Ah, now I understand you point.
I agree. Either
all the MF expenditures are subject to Assault Move benefits or
none of them. The defender will know which case applies because per B26.4 he is entitled to see the Wire Exit dr before declaring
any First Fire against the unit.
"B26.4
...
To move/rout beneath a Wire counter, each unit must make a dr (Δ) and expend that number of MF to be placed beneath the Wire counter in the same Location. Any remaining MF may be used to move/rout elsewhere normally. Once beneath the Wire counter, a unit may move/rout unhindered, even in the direction from which it originally entered the Location. MF expended in an attempt to get beneath the Wire qualify that unit for the FFMO DRM (if in an otherwise Open Ground hex) and for the -1 First Fire DRM for FFNAM if it expends all of its MF in entering that Location/attempting to get beneath the Wire. A unit on a Wire counter cannot use Sewer/Tunnel Movement. It may declare Assault Movement in its attempt to get beneath the Wire (and even move on to another Location) but if it uses all of its MF in doing so, the Assault Movement status is voided. The DEFENDER is entitled to see the Wire Exit dr before declaring any First Fire against the unit."
IMHO, this has the following consequences:
Let us assume for the example that a unit is ADJACENT to a Wire Counter in Open Ground.
Case 1:
The unit declares Assault Move to move into the Wire hex but does NOT make a Wire Exit dr at this point.
In this case, the unit would move on top of the Wire with AM benefits. The attacking player could await any reaction by the defender. If nothing happens, he could
now declare Infantry Smoke placement attempt into his own and I believe also into an ADJACENT hex (but the latter is an interesting question that I have not analyzed), because this would cost him 2 or 3 MF altogether and thus less than his standard 4MF and thus still qualify as an Assault Move.
The gain could be that he might 'surprise' the defender by his Infantry Smoke placement attempt while retaining AM benefits against Defensive Fire vs. the Infantry Smoke placement attempt. The drawback would be, that the attacking unit would be
prohibited to even attempt a Wire Exit dr as it did not do so before entry of the Wire hex. This he would have been required to do as the defender is entitled to see the dr
before any First Fire against the attacking unit.
Case 2:
The unit declares Assault Move to move into the Wire hex and DOES make a Wire Exit dr at this point. The dr is 1.
In this case, the defender knows from the start that the attacker will attempt to move beneath the Wire and that he will be successful in doing so unless stopped by Defensive Fire.
The attacking unit moves in for 1MF on top of the Wire, is fired upon with Assault Move benefits. It survives the fire unharmed.
Now (surprisingly) , the attacking unit declares an Infantry Smoke placement attempt in its own hex for 1MF. Now having spent 2MF and knowing that the Wire Exit dr was 1, we know that the overall expenditure to move beneath the Wire will amount to 3MF, which is enough to 'maintain' the Assault Move. It will be attacked by Residual FP with AM benefits and assuming it is unharmed the Residual FP attack for the Infantry Smoke placement attempt, any further Defensive Fire vs. this expenditure will as well have AM benefits.
Provided the unit survives all of that, too, it will now move beneath the Wire for its 3rd MF. RFP attack is N/A as it has already happened before and the unit does not become more vulnerable. For this 3rd MF, Defensive Fire is still subject to AM benefits.
Case 3:
The unit declares Assault Move to move into the Wire hex and DOES make a Wire Exit dr at this point. The dr is 1.
In this case, the defender knows from the start that the attacker will attempt to move beneath the Wire and that he will be successful in doing so unless stopped by Defensive Fire.
This time, the attacker moves atop the Wire for 1MF with AM benefits and is attacked, survives unharmed again. RFP is placed but does NOT attack the unit on the 2nd MF expenditure (I
think, but this is interesting...) when moving beneath the Wire because it is 'one move' and the unit does not become more vulerable upon the 2nd MF expenditure while retaining AM benefits. When beneath the Wire, it
now (surprisingly) declares Infantry Smoke placement into its own hex, which is successful. So it has spent 3MF, retaining AM benefits vs. the RFP attack that ensues. Compared to Case 2, the odds to survive unharmed are better as the unit is no longer atop the Wire. If it is unharmed by the RFP attack, it would maintain AM benefits against all Defensive First Fire thereafter.
Case 4:
The unit declares Assault Move to move into the Wire hex and DOES make a Wire Exit dr at this point. The dr is 2.
The attacker moves atop the Wire for 1MF with AM benefits and survives Defensive Fire unharmed. In this case, it would be
prohibited to make an Infantry Smoke placement attempt as it already took advantage of AM benefits. Because it
already took advantage of AM benefits for its 1st MF AND took a Wire Exit dr of 2, it
cannot now void its AM in favor of Infantry Smoke placement instead of moving beneath the Wire.
Case 5:
The unit declares Assault Move to move into the Wire hex and DOES make a Wire Exit dr at this point. The dr is 3.
We know at this point, that AM is voided from the start but that the attacking unit will end up beneath the Wire unless stopped by Defensive Fire.
It could enter atop the Wire (1MF) and either now or later declare Late CX to make an (surprising) Infantry Smoke placement attempt while atop or beneath the Wire provided it survives all Definsive Fire / RFP to do so. All this without any AM benefits.
Does this sound right?
von Marwitz