(AB2 guide) how to create database file
step 1: go to Program Files (x86)\Matrix Games\Armored Brigade 2\data\database
step 2: copy the default folder
step 3: go to Documents\My Games\Armored Brigade 2\data\database
step 4: paste the default folder
step 5: open eras.xml with a text editor software like notepad
step 6: change the name in <string name="databaseID" value="default" /> to <string name="databaseID" value="desired\_name" />
step 7: open the game and change database in the settings window (appears when you launch the game)
now you can use your new database to create mods