MilSim differs from the sports of airsoft or paintball - though all rely on tactics and marksmanship, MilSim has a focus on authenticity to real-world military doctrines. There are often fireteams with designated roles, such as simulated combat medics and support gunners.
Unlike airsoft or paintball, which focus on strategy and shooting skills, MilSim emphasizes realism in its portrayal of military tactics. Teams typically comprise players with specific roles, including simulated medical personnel and gunner specialists.