If you'll start the new game as it is, without making any changes.
You start as a commander of 200 men strong Thracian Auxiliary Cohort.
But there are also other options:
1) You can choose what
type of army do you start with.
It's just a starting option, later on in the game you can recruit whatever soldiers you like, and
choose your allegiance to whomever you like.
2) You can choose
size of average "bandit parties" on the map.
and so it happens that size of average "bandit party",
will be also size of your starting army.
Choices here are limited to 200 men, or 100 men in the "reduced troop numbers X2" subfolder.
Those are
not save game compatible.
So if you'll decide to pick a new starting army, you'll also
have to start a new game.
IMPORTANT NOTE: Sizes of town garrisons and armies commanded by other lords stay the same,
regardless of size and type of your starting army.
Installing:Example 1:Let's say you want to start as a commander of Legio II Augusta and
you'd like your starting army and bandit parties on the map, to be around 200 men strong.
copy 3 files: parties.txt, party_templates.txt and troops.txt
from: "..\Imperium Romanum\ADDONS\STARTING ARMIES\Legio II Augusta\"
into: "..\Imperium Romanum\".
When asked if you want to overwrite, click Yes.
Now you can start a new game.
Example 2:This time you want to start alone, with no army at your command and
you'd like bandit parties on the map, to be only around 100 men strong.
copy 3 files: parties.txt, party_templates.txt and troops.txt
from: "..\Imperium Romanum\ADDONS\STARTING ARMIES\Lone Adventurer(No army)\reduced troop numbers X2\"
into: "..\Imperium Romanum\".
When asked if you want to overwrite, click Yes.
Now you can start a new game.