A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Hold Them Off Battle: Destroy your target Personality: Increase or reduce the current battlefield's province's strength by his Personal Honor. You may target a number of Personalities up to his Personal Honor; those Personalities may not use their base abilities this turn.
Do the Personalities targeted for the second effect have to be opposing the Personality destroyed as a cost for this Strategy? Or can they be in other provinces or at home?
Hold Them Off: Do the Personalities targeted for the second effect have to be opposing the Personality destroyed as a cost for this Strategy?
http://rules.l5r.com/CE_Battles#Rule_of_Location: "A card in a unit must be at the current battlefield to be targeted by a Battle action."
Yes.