Reinforcement script

I've noticed (playing as the Teutonic Order) that whenever I lay siege to a Lithuanian city, a solid army springs up out of nowhere to oppose me. I'm sure this is an intentional reinforcement script to make the game more challenging, but it gets frustrating. What files do I need to modify to eliminate this script? Is it easy to do?

if you're referring to Garrison script, just open campaign_script.txt, found in dlv_teutonic_knights\data\world\maps\campaign\imperial_campaign

And delete everything starting with this:

Spoiler Alert, click show to read: 

Code:

---

;==========================================================================
;=        I          Garrison Script by derdrakken                      =
;==========================================================================

;------------------- faction check and initializing -----------------------

---

And ending with this:

Spoiler Alert, click show to read: 

Code:

---


end_if
if I_SettlementOwner Akershus = denmark
and I_CompareCounter denmark_start 0
    create_unit Akershus, Dismounted Huscarls, num 1, exp 0, arm 0, wep 0
    create_unit Akershus, Viking Raiders, num 1, exp 0, arm 0, wep 0
    create_unit Akershus, Crossbow Militia, num 1, exp 0, arm 0, wep 0
    create_unit Akershus, Norse Archers, num 1, exp 0, arm 0, wep 0
    create_unit Akershus, Peasant Archers, num 2, exp 0, arm 0, wep 0
    create_unit Akershus, Spear Militia, num 2, exp 0, arm 0, wep 0
end_if
set_counter Akershus_siege 1
end_monitor

---

It's a lot of text. use Ctrl+F command to find the necessary fragment. Create a backup before you make any changes.

Thanks, that took care of it.

Thank you for the help. :)