In deathmatch games (Halo, etc.,) yes, they do work. However, the people playing are not likely to use tactics when there's a room full of people to melee.
In military sims, they work beautifully. Take Project Reality. Use any real-life tactic and it works perfectly.
In military sims, they work beautifully. Take Project Reality. Use any real-life tactic and it works perfectly.