Operation Metro is to this day THE best CQC map, it is perfect map to learn the importance of smoke, pushing and holding positions, suppressing enemies with guns and using your corners and positioning, you do not learn any of this in the other maps due to vehicles and everything being open. On top of that you also had the metro elevators that were the perfect example of dropping in hot territory where you could run into C4 instantly or surprise the enemy from behind and get your team that extra edge, this can also be used in the other way by the enemy to get downstairs to surprise the ones pushing from C point. Walls getting destroyed, people crawling through the lockers at B point while laying cover fire for the team. This was like as pure as chaos can get, seeing people mow down groups or getting shot at by groups pushing, you do not get this in any other map!
