Narvek: Solo units exploring the map is a very good idea!
Kuokkanen: But if low level 1 unit army is attacked by wandering independent unit (scoundrels, monsters, whatev), it's goner. Unless DaKarach's advice works. I try that with my irregular units. Irregular units (civic guard, initiate etc.) make excellent scouts when speed upgrades (off the beaten path and trail running) have been researched.
More questions:
Can this game be modded and to what extent?
Can bridges be built?
Can ship move under the bridge?
You can only flee the battle as attacker, so for the tactic to work you'd need to keep evading the enemy for 6 rounds, which can be pretty hard to impossible.
Almost all classes have a tier 1 summon that makes an excellent scout: summon 5, send in all directions, if one goes down summon another :)
Modding: There's a level editor that is really powerful. but unit stats for example cannot be modded (yet).
Bridge building: no
Ships moving under bridge: yes (if they have enough movement points)