The national flag of Algeria is half white and half green, in the center is a red crescent and star. The flag was adopted on July 3, 1962. The flag is similar to earlier ones used by the National Liberation Front (FLN), and some say was used by Abdel Kadir in the 19th century. The White is for purity, while the green is for Islam. The crescent has become an Islamic symbol, and originated on the Flag of Turkey.