Interpenetration

Another circumstance which came up last night.

I had a command containing T archers and CP cavalry.
At the start of the turn the archers were immediately behind the cavalry.
With the tournament interpenetration rules I advanced the archers through the cavalry, did my firing, then charged the cavalry through into my opponents dismayed forces.

I think its legal, but just checking.

Have the T enough movement allowance to clear the CP (maybe they need to make a double move?). If they have, then what you did sounds legal. They don't displace the CP so the T can't make the move unless they move far enough that they no longer overlap.

After that, the CP can be activated as normal, so if you want them to charge they can do so.

RogerC

The archers started front edge to rear edge with the cavalry. One move would have not cleared the cavalry -it would have required two movements to do so.

So in this case could I have made a double move and rolled for discipline?

I am a little unclear about the phrase in the rules -"If interpenetration cannot be completed for some reason the Unit that attempted interpenetration stops just before contact". As I started in contact I assumed I could go through - but I dont know what reasons count for stopping interpenetration.

Interpenetration is a bit complicated because it depends on the unit doing the interpenetrating and on the unit being interpenetrated.

In the case we're talking about, the T cannot displace the CP. So if they cannot clear them, they cannot make the interpenetration. They can't end up sitting on the CP and can't move more than their movement allowance in a single movement phase. That is true even if they start in contact with the rear of the CP. So they'd need a double move, with a consequent risk of disorder. If they couldn't make the double move (e.g because they're disordered already) they can't make the interpenetration.

It would be different if you replaced the CP with another T, because one T displaces another. So if one T moved to overlap, the overlapped T would be displaced backwards. If the displaced T hadn't been activated, it could subsequently move (and maybe displace the first T). You see this all the time with CL.

RogerC

You're far better doing this with CL and CP, or CL and CM or CL and CL - the whole rolling CL trick is standard fare for such armies.

The T would be taking -2 on shooting, possibly -3 if disordered hardly worth the effort. . .

If you must use infantry, have the T at the front from the get go (assuming the CP aren't impetuous) that way they protect the CP's VBU and IMP

So what would happens in an Involuntary Interpenetration to the rear, for example if a unit of FL (call them FLa) losses a melee and breaks off but another FL unit is behind (FLb)
does FLa stop when it contacts FLb,
FLa passes pushes FLb back when they contact.
or something else?
Thanks Malcolm

FLa passes through FLb.