The sprawling, four-day Battlegroup 2025 airsoft event became a landmark experience for milsim enthusiasts and here is a video from Rogue One Airsoft. This event ran from 23 July to 26 July 2025, taking over the former Finnish Defense Forces training area, Halli, in the city of Jämsä. Participants found themselves immersed in a vast, dynamic environment characterized by excellent roads and diverse terrain, which offered both beautiful battlegrounds and unique strategic locations.