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, 17 November 2008
If I use Surprise Attack to create a battlefield not associated with a province, is it considered adjacent to any province for effects requiring an adjacent province (such as Glorious Mission)?
Example: I declare an attack with the Fire Dragon, and during the course of the battle play Surprise Attack to move him and an enemy unit to a created battlefield. As his first action, the enemy leader targets my Fire Dragon with an action. Can I then play Glorious Mission to move him to another battlefield?
Brook Cunningham (rules official), 17 November 2008
If I use Surprise Attack to create a battlefield not associated with a province, is it considered adjacent to any province for effects requiring an adjacent province (such as Glorious Mission)?
Example: I declare an attack with the Fire Dragon, and during the course of the battle play Surprise Attack to move him and an enemy unit to a created battlefield. As his first action, the enemy leader targets my Fire Dragon with an action. Can I then play Glorious Mission to move him to another battlefield?
http://rules.l5r.com/Glossary_B#Battlefield:
"...Battlefields not associated with a province are not adjacent to any other battlefield."