Call of Duty 3 - Platform: Wii

Night Drop mission: Easy completion:
------------------------------------
When you meet up with the French rebels you will have a choice to go left to 
the Flak 88s or go through the house to the right. Go left to the guns. Kill 
all the Nazis around the gun and in the ditch leading to the next gun. Then, 
blow up the 88 and move on to the rest of the guns. After you blow up all the 
guns you will reach the house that you would have had to take if you went 
right. When you go in the house you must defeat a Nazi that is standing there 
waiting for you. Kill all the enemies in the house and fall through the burning 
floor. You will see you allies there waiting for you.

The Island mission: Best gun early:
-----------------------------------
On the second mission, The Island, there will be a man under the second bridge 
with a FG42 scoped. That gun will get more ammunition every time you kill someone. 
The gun starts with 96 ammo remaining and you can kill about 150 people with it 
(not including melee). After completing that mission you will have that gun on 
the third mission, but you must save the gun through the third mission to get it 
in the fourth mission and so on.

Unlock all Extras:
------------------
At the chapter select screen, hold +, and press Right, Right, Left, Left, 2, 2.

NOTE: Imput code quickly. 

Level select and bonus content:
-------------------------------
At the chapter selection screen, hold Plus and press Right two times, Left two times, 
2 two times to unlock all levels and bonus content.

Hold Extra Grenades:
--------------------
Normally, you're only supposed to hold 6 grenades but when you have a grenade thrown 
at you you can pick it up and throw it again. Instead of throwing it you can keep it 
for later by pressing the minus button a second time after picking up a grenade. 
There's no limitation of grenades when doing this.