The national flag of Turkey, officially the Turkish flag (Turkish: Türk bayrağı), is a red flag featuring a white star and crescent. The flag is often called 'the red flag' (al bayrak), and is referred to as 'the red banner' (al sancak) in the Turkish national anthem. The current Turkish flag is directly derived from the late Ottoman flag, which had been adopted in the late 18th century and acquired its final form in 1844. The measures, geometric proportions, and exact tone of red of the flag of Turkey were legally standardized with the Turkish Flag Law on 29 May 1936. (Source: Wikipedia.org, CC BY-SA)