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.
A player, 15 April 2014
Ambush creates a battlefield durring the limited phase but does not create an attack phase. Can I snipe something with Rin and use the 1 gold later in my limited phase?
Also some stupid Ambush questions: 1. If you destroy cards durring the battle resolution do you gain honor?
2. If you or your opponent play the false route you can then use harpoons/engage/movement at the new battlefield correct? 2.a. Also would I still be the attacker reguardless of who played the false route?
3. I know ambush battlefield is not adjacent to any provinces, but are there still battlefields at those provinces? (Isawa Uzuyumi)
Brook Cunningham (rules official), 18 April 2014
Ambush creates a battlefield durring the limited phase but does not create an attack phase. Can I snipe something with Rin and use the 1 gold later in my limited phase?
Indeed, for the reason given just prior.
Also some stupid Ambush questions: 1. If you destroy cards durring the battle resolution do you gain honor?
2. If you or your opponent play the false route you can then use harpoons/engage/movement at the new battlefield correct? 2.a. Also would I still be the attacker reguardless of who played the false route?
3. I know ambush battlefield is not adjacent to any provinces, but are there still battlefields at those provinces? (Isawa Uzuyumi)
1. Yes. Everything about a Battle still occurs at an Ambush battlefield, because you "fight a battle there".
2. I'm not sure what your asking here. You'd have to be more specific about what actions you want to take and when. But in general, you'd have another non-Province-associated Battle to fight after the Ambush one, because a part of the sequence of battles is to fight any unresolved ones after it, but otherwise no conditions change. 2a. Yes, for the same reason as "2".
3. No, there are not. Battlefields at Provinces are created by starting an Attack Phase.