Bloc is a large map in Call of Duty 4: Modern Warfarewith great sniping positions (due to the large distances between both apartment buildings). To assault any building, attack from the side entrances, or make way along the sides to avoid being sniped, and then run along the building the player is trying to assault to use the stairs in the center. (Most snipers won't watch the area right in front of their building.)
The back pool area and far garden provide excellent cover if lucky for a headquarters to spawn there. Use Night Vision when entering the left building, dark places are camper havens where they lie in wait for anyone careless enough to rush in for a simple backstab. Most effective classes are sniper or stealth classes (So be sure to watch out for any claymores before entering a room).Digital camouflage works best (if the player wishes to hide in the dark areas), although Blue Tiger Camouflage can be used as well, but not as effective.
This map tends to be one of the least liked in the game mainly due to how hard it is to move around it without being prey to snipers. Thus camping becomes a big problem here, and many players vote to skip this map time and time again.