1 Video
"The Origin and Description of the National Flag and Anthem of the Kingdom of Bhutan", the first Bhutan flag appeared during the signing of the Indo-Bhutan Treaty of 1949. It features a green dragon in the middle of the flag and a yellow and red background.
needed during a royal tour in 1956. A flag was made based on a photograph of the flag used in the 1949 treaty, but the dragon was changed to white. Many flags were made, to affix to the saddles of every tenth pony in a convoy, and a larger flag, about 6 sq. feet to be hoisted at the camps. "The flag was square and the dragon, instead of being diagonally placed, was straight."
in the late 1950s. Instead of a square flag, it was made rectangular. The dragon became white instead of green. It flew diagonally rather than straight. The King commanded sometime in 1968 and 1969 that the colour of lower half be changed from red to orange. It was also around the same time that the tradition of hoisting national flag in front of government offices began. On 8 June 1972, the National Assembly passed a code of conduct concerning the national flag.
An video explanation of the evolution of the Bhutanese flag.