.ROS File Extension
File TypeBattleScribe Roster Editor File
What is a ROS file?
File created by BattleScribe Roster Editor, a program used for building army lists for table top war games, such as Warhammer 40,000 or Warhammer Fantasy; saves a list of army units and their abilities, organized into categories.
Once the points limits and army selections are validated in the software, you can export them and then use them for playing a table top war game.