May a leader who moved into a location containing units marked with an Opportunity Fire counter direct them in the Advancing Fire Phase? If yes, is the firepower of the Opp fire units at full strength or halved?
A7.25 Any Good Order Infantry/Cavalry which
has not yet fired or become TI during that Player Turn may be placed beneath a Bounding Fire counter during its PFPh.
...
Such a unit cannot fire during the PFPh or
move during the MPh, but if still unbroken (/unpinned, in the case of FT/DC/
MOL) may fire during the AFPh without the penalty of AFPh Fire (7.24).
Once a unit Opportunity Fires and exhausts its Multiple ROF, flip its Bounding Fire marker over to the Prep Fire side. An Opportunity Firer is the only
unit that can use a Multiple ROF or Intensive Fire during the AFPh.10 Ordnance can use Opportunity Fire only if fired by Infantry, and cannot change
its CA until actually resolving its To Hit attempt during the AFPh when it
would be subject to applicable Case A To Hit DRM.