Thank you now we have a clear ruling on the matter.

But then what can the bases that are contacted use as charge modifiers?

Does shieldwall, integral shooter count?

Does the LS standing to receive count ?

etc ...

Any base contacted in the flank cannot claim or cancel opponents factors.

Long spear standing to receive can be claimed by troops hit by pursuers as long as it is not in the flank.

Integral shooter cannot be claimed by pursuers, but could be claimed by troops hits by pursuers as long as it is not in the flank.

Shieldwall can be claimed by the pursuers because it won't be in the current phase. It can be claimed by troops hit be pursuers as long as it is not in the flank.

Hope that is clear (and is correct!).

Richard