Unlock the following postcards by performing the corresponding tasks:
POSTCARD - HOW TO UNLOCK Pacific Campaign - Win on all maps twice. Tour Of Duty I - Play 50 matches. Tour Of Duty II - Play 130 matches. The Best - Get the highest score in a match. Truly Elite - Get 10,000 Kills. Melee Man - Get 20 melee kills. Master Of Your Domain - Get 17 kills with each class. Master Blaster - Kill 50 enemies with grenades, rifle grenades, or explosives. Rifleman - Kill 50 enemies with the semi-automatic rifle. Infantryman - Kill 50 enemies with the sub-machine gun. Sniper! - Kill 50 enemies with the scoped rifle. Motorman - Get 25 kills with a car, tank, and plane. Parachutist - Use the parachute four times. Milkrun - Fly a plane for 20 minutes. Bomb Run - Launch an air raid killing and kill one enemy. Wheelman - Get 50 kills with a car, tank, or boat. Fighter Ace - Get 50 kills with fighter planes. Defender - Defend 20 flags. Attacker - Capture 30 flags. Veteran - Capture 50 enemy flags. Lifer - Reach the top rank. Squad Assister - Get 100 squad assists. Squad Avenger - Avenge 100 squad members. Best Squad - Be in the best squad three times on all maps.