Call of Duty: Finest Hour Hints for XBox
This is good in the first and second Call Of Duty. The guns you always want are a Kar 98, any type of sniper, or any other bolt action rifle because most of the time they are one hit kills but if you have a high powered machine gun then it takes more ammo and more shots hit to kill an enemy so if you have a bolt action rifle of any kind or a sniper of any kind then the game(s) should be easy.
On the American campaign, Last bridge standing there is a T34 on your right.
This is at the end when the hole over the bridge is blown up. Have a go at trying to get in it.