During the mission where you have to carry your captain (when you are in the Ghillie Suits),you will find an abandoned swimming pool with some rabid dogs at the bottom. Instead of killing them, run around the edge without fallingl in. When you drop your captain off behind the Ferris wheel and both of you get into position, there will be a patrol after you. When your captain tells you to open fire with your sniper rifle, shoot anyone on the left side nearest to the building with the pool in it. They will all hit the deck after one of their teammates dies. The dogs will sense danger, jump out of the window, and attack the soldiers. This is helpful and saves ammunition as at least four or five of the soldiers die.