A way to eliminate nations from producing single unit armies from raiding everything in your province

[Amood87]

This is the single most annoying aspect of ETW. It really shows the age of this game. Is there a way to eliminate raiding buildings in territories? The AI loves spamming raids with single unit armies and then the awesome process of checking every building to see what needs repairs. I think it's tedious and unnecessary.

I wonder if a mod or something takes care of that.

[eugenioso]

That is WAD. The AI will try to raid you to reduce your income and impede your armies from marching. I recommend you do the same if you're having problems with a big faction with lots of isolated terrains, like the ottomans. Its not as useful in Europe and its cramped conditions.

[William of Orange]

This is a legitimate tactic, to be expected from the AI and requiring proper countering. Economic warfare has been employed for millennia and it's pleasing to see the AI understands this (even if its mastery is somewhat weak).

1. Control river crossings. This is a time honoured, and well proven, means of keeping one's lines tidy since Jephthah defeated the Ephraimites and secured the crossings of River Jordan to complete their defeat.
2. Consider establishing a "sweeper stack", of 6 to 8 units possibly somewhat depleted, behind your main stack to defeat such insurgents. As a corollary, master the art of "partial stack combat", and use it as a means of "seasoning" newly recruited generals.
3. When a main battle stack must detour to eliminate an insurgent, conserve its movement by engaging with just a single unit, with the main stack arriving as reinforcements. Only the one unit (I recommend a cavalry in most cases) loses the movement points for the full detour, and it will catch up within two turns because of artillery's slower movement rate.
4. If near the coast, leverage your (presumed) naval capability to speed up movement. Until the arrival of steam locomotion, transport of men and material was always far faster by water than by land. This is of particular value in eliminating banditos in the mountains of Western Mexico, by moving a single sloop or brig to the Panama Coast of The Americas. To get one there from:

• Atlantic Canada (3 turns):
  Move to East Indies from either North Atlantic or Mid Atlantic sea zone, arriving two turns later in Molucca sea zone, then move to The Americas arriving in the northern sea zone a turn later.
• West Indies / Guyana (2 or 3 turns):
  Move to Coast of Brazil from Guyana sea zone, then depart for The Americas from the South sea zone arriving at the southern (Panama) end the next turn.
• Europe (2 or 3 turns):
  Move to Coast of Brazil from Canaries sea zone, then depart for The Americas from the South sea zone arriving at the southern (Panama) end the next turn.
• East Indies or Coast of Brazil (1 turn):
  If time is of the essence, use an existing Indiaman in either the East Indies or Coast of Brazil. departing for The Americas from respectively either the Molucca or South sea zone.