Here are some tips.
If your pinned by a machine gun or two use a smoke grenade to find cover closer to it.
When throwing a frag grenade conisider the timer at all times. Just because it disapeared after you threw it it doesn't mean it doesn't exist. It will still explode when the timer would've went up.
Always snipe as many enemies as you can from a safe spot before trying to enter the area. You may find yourself pinned!
Reload everytime your not fighting.
Always have 1 shotgun/sniper rifle and 1 machine gun.
The MP40 makes a good machine gun because ammo is easy to find.
Try to get good at using German rifles because German ammo is common.
I hope my tips benefit you because using these tips helped me beat the game on hard level!
Added by: WWII Corporal Jan 26th 2007, ID#196