Successfully complete the game to unlock interviews with veterans Gordon Boulton, Sgt. John D. "Bud" Hawk, and Sgt. Stan Markut.
Fuel Tank mission: Wrong instructions
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.
Getting more ammunition
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.
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.
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.
Move friendlies
To move your friendlies, use ADS and aim at them, then press Fire. Do not worry as you cannot shoot at a friendly. Your friendly should move from his location. This is useful when you are trying to enter an area blocked by a friendly.
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.
Night Drop: Defeating the Nazi soldier
Do not to do a full melee (Wiimote and Nunchuk back and forth). Move only the Wiimote and, as if holding an actual rifle, repeatedly make the motion of hitting the Nazi with the butt of the gun. Doing a full melee or doing a forward thrust will get you killed every time.
Saint Lo mission: Capturing the church
In Chapter 1 (Saint Lo), to capture the church you must kill all of the Nazi soldiers (while hiding behind walls etc.). It is best to use the Thompson gun in your arsenal. Once you have killed all of the Nazis in sight, go up to the church and throw two or three smoke bombs in it. After that, throw two grenades in the church while the smoke is still active. Once you have done that, you will be able to go to your destination, capture the church, and be able to move on.
Scoped FG42 in The Mace mission
When you get to the part where you must keep the Nazis from the trenches, do not listen to the men. Go to the right and follow the path to find an FG42 scoped leaning on a crate.
Sniping
When sniping, get into a nook or cranny or other some small place where you can either crouch or go prone. You should also try to get a good view on your targets. Tall grass is also a great idea, or even better, an area where people will not realize you are there (for example, camping on the enemy's spawn point). When sniping on a very tricky target, or if you do not want to be seen, try your best to pull out your pistol and use your binoculars to spot your target. It is interesting how much less obvious your position is if you use your binoculars. Although many people will debate this, do not take any more shots than you need to. If possible, try to take them out in one shot. Do not shoot unless you are sure that you can kill them without one of their friends recognizing your position.
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.
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.
Veteran interviews
Successfully complete the game to unlock interviews with veterans Gordon Boulton, Sgt. John D. "Bud" Hawk, and Sgt. Stan Markut.