From the Battlefield image - Europe In Ruins Mod for Company of Heroes: Opposing Fronts

Europe in Ruins is a modification for Company of Heroes that converts the game into a MMORTT. Units are purchased and managed via the launcher program and transferred into the game for battle. After the battle, the units are automatically updated, units lost are removed from your company, units surviving have their experience levels updated. Best of all, the modification does not affect your Company of Heroes or Opposing Fronts installation or your ability to play the original game with the modification installed!