By the time of WWII, the Nazis built the weapons that were far more superior than others so a Union Army was sent to spy on them. Your mission is to destroy the enemy's newly manufactured tanks.
A Soviet soldier taking part in the Battle of Stalingrad in 1942. To purge the city from the invading fascists, you got rifle, grenades and you can call backup. Make use of the reinforcements at your disposal.
Nobody pays attention to a meteorite fall in the jungle and a few years later, military satellites discovered strange activity in the jungle. Your government sends elite commandos to find out what is going on and to try and clear up the situation..