There was a download of ARMA 2 REINFORCEMENTS 4.6 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. ARMA 2 REINFORCEMENTS relates to Games. The actual developer of the program is Bohemia Interactive. We recommend checking the downloaded files with any free antivirus.
From the developer:
Arma 2: Reinforcements brings to the Armaversum two new factions - Her Majesty's Armed Forces and private contractors. Play it separately or combine with original Arma 2: Combined Operations for ultimate military combat experience. Joint he massive online multiplayer battles with up to 50 players and hundreads of AI units!
You may want to check out more software, such as ARM RVDS, ARM or ARM DS-5, which might be related to ARMA 2 REINFORCEMENTS.