The team I play on, the South Manitoba Rifles, strives for an equal balance between "mil-sim styled airsoft" and "military re-enactment". We believe those two components, in proper balance, make a compelling mix.
We participate annually in Operation East Wind, where a third element, "military vehicle collectors" gets added to the mix. You've never really experienced mil-sim until you've ridden into battle in the back of an APC or faced off against a real ex-Soviet BTR!