Flag of Bhutan depicts Druk
The national flag of Bhutan (Dzongkha: འབྲུག་ཡུལ་རྒྱལ་དར​) is one of the national symbols of Bhutan. The flag features a Chinese dragon (druk in Dzongkha, the Bhutanese language) from Bhutanese mythology. This alludes to the Dzongkha name of Bhutan – Druk Yul (འབྲུག་ཡུལ་, 'brug yul, lit. "Dragon Country" or "Dragon Kingdom") – as well as the Drukpa Lineage of Tibetan Buddhism, which is the dominant religion of Bhutan.
The basic design of the flag by Mayum Choying Wangmo Dorji dates to 1947. A version was displayed in 1949 at the signing of the Indo-Bhutan Treaty. A second version was introduced in 1956 for the visit of Druk Gyalpo Jigme Dorji Wangchuck to eastern Bhutan; it was based upon photos of its 1949 predecessor and featured a white Druk in place of the green original. The Bhutanese subsequently redesigned their flag to match the measurements of the flag of India, which they believed fluttered better than their own. Other modifications such as changing the red background color to orange led to the current design, in use since 1969. The National Assembly of Bhutan codified a code of conduct in 1972 to formalize the flag's design and establish protocol regarding acceptable flag sizes and conditions for flying the flag.Symbolism
According to The Legal Provisions of the National Flag of the Kingdom of Palden Drukpa as Endorsed in Resolution 28 of the 36th Session of the National Assembly held on 8 June 1972, and as restated in the Constitution of 2008, the yellow signifies civil tradition and temporal authority as embodied in the Druk Gyalpo, the Dragon King of Bhutan, whose royal garb traditionally includes a yellow kabney (scarf). The orange half signifies Buddhist spiritual tradition, particularly the Drukpa Kagyu and Nyingma schools.  The dragon spreads equally over the line between the colors. Its placement in the center of the flag over the dividing line between the flag's two colors signifies the equal importance of both civic and monastic traditions in the Kingdom of Druk (Bhutan) and evokes the strength of the sacred bond between sovereign and people. The dragon's white color signifies the purity of inner thoughts and deeds that unite all the ethnically and linguistically diverse peoples of Bhutan. The jewels held in Druk's claws represent Bhutan's wealth and the security and protection of its people, while the dragon's snarling mouth symbolizes Bhutanese deities' commitment to the defense of Bhutan.First national flag (1949)
The CBS document states that the first national flag was designed upon the request of Jigme Wangchuck, the second Druk Gyalpo of the 20th-century Kingdom of Bhutan, and was introduced in 1949 during the signing of the Indo-Bhutan Treaty. While the document does not provide an illustration of the original design, black-and-white photographs taken at this historic event provide images of the first Bhutanese flag at the ceremony.The design of the flag is credited to Mayum Choying Wangmo Dorji in 1947.  Lharip Taw Taw, one of the few painters available to the royal court at the time, is said to have embroidered the flag. Druk was colored green in accordance with traditional and religious references to yu druk ngon ma (Dzongkha: གཡུ་འབྲུག་སྔོནམ​), or "turquoise druk". Today, a modern reproduction of this historic original (with several significant changes influenced by the modern flag) is displayed behind the throne in the National Assembly Hall in Thimphu.According to the CBS document, the original Bhutanese flag was a bicolour square flag divided diagonally from the lower hoist to the upper fly. The field of yellow extended from the hoist to the upper fly, and the red field extended from the fly end to the lower hoist. In the centre of the flag, at the convergence of the yellow and red fields, is a green Druk, located parallel to the bottom edge and facing the fly.However, the CBS document does not illustrate the early versions of the flag and its description of the 1949 flag is not entirely consistent with the photos surviving from 1949.  It describes the flag as "square", while the proportions of the flag in the photographs appear closer to 4:5.  The document describes the dragon as "facing the fly end", while the dragon visible in the photos faces the hoist. The dragon is described as "parallel to the fly" (meaning, according to a diagram in the document, parallel to the length along the bottom edge of the flag), while the dragon in the photos appears to have a slightly rising vertical slant. The dragon is described as "green", but the shade in the photos, if indeed green, must be very pale.
Western flag books until after 1970 generally show the Bhutanese flag closely resembling the 1949 photos.
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