Call of Duty 3

Successfully complete the game to unlock interviews with veterans Gordon Boulton, Sgt. John D. "Bud" Hawk, and Sgt. Stan Markut.

In the Fuel Tank mission where you must wrestle the Nazi's rifle from him, point the tops of both the Wiimote and Nunchuk towards the sensor bar. Do not hold the controllers as indicated on-screen.

If you particularly like a specific weapon from your faction, such as the M1 Garand or Bren, use the following trick to get more ammunition. Find a character on your team that is not an unkillable character (for example, Sgt. Dixon, or Lt. Robiechaud) and melee them. More often than not, the game will not fail the mission. Pick up the ammunition and continue the fight.

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.

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.