Gripping story

Gears of war 3 is very sad. (SPOILER) There is a part where one of the main characters sacrifices himself so the rest of his squad can escape from enemies called the lambent. The characters name is dom. He is a lot of peoples favorite character out of the game. Also at the end he saves his dad and (SPOILER) his dad uses a machine. But in order to use the machine to wipe out the lambent he has to sacrifice himself.