Royal Thai Army Unit Colours (1949-1979)
The Flags of the Military Divisions B.E. 2505 [1962 AD]
This is a tricolor flag with a crown in the top left-hand corner, the identity of the King conveyed by the appropriate ordinal number in yellow. Beneath the crown, from which blue rays of light radiate, are his Majesty's initials – in red outlined in yellow. The outer edges of the flag are trimmed in yellow braid, 2 cms wide.
An announcement by the Ministry of Defense, dated December 22, B.E. 2505, issued in line with the Royal Decree of B.E.2479 [1936 AD] concerning flags, specified the materials to be used to embroider the patterns on the flags of the various military units. The pattern was amended only with the accession of King Bhumibol with the replacement of the previous monarch's cypher with a new cypher in 1949. This changed was confirm in the Act of 1962.

The military flag currently in use – the ChaiChalermpol Flag – follows the pattern specified in a special Royal Decree of B.E.2522 [1979 AD] concerning flags.FOTW
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Sodacan