The national flag of the Kingdom of Belgium is a tricolour consisting of three equal vertical bands displaying the national colours: black, yellow, and red. The colours were taken from the coat of arms of the Duchy of Brabant, and the vertical design may be based on the flag of France. === Military flags of Belgium === The flags of the Belgian Land, Air, and Naval Components represent their different branches in the Belgian military. Andrew's cross was derived from the Cross of Burgundy, which decorated the ensigns of the Belgian ships during the Burgondian rule.
The flag of Belgium has a ratio of 13:15, which is unusual when compared to the dimensions of other national flags. As is common in other nations around the world, the national flag of Belgium takes precedence over other flags, including regional flags and the European flag.