In 1920 he completed his studies in France.
King Rama VI bestowed a second lieutenant on July 29, 1920, as a king guard under the
1st Infantry Regiment. Later, on January 27, 1922, King Rama VI bestowed the rank of lieutenant while studying military school in France. He also served in several French infantry regiments. On June 29, 1931, he was graciously pleased to hold a position Assistant Chief of Staff for the
Royal Thai Army. In 1932, he retired from military officer then moved to serve in the
Ministry of Foreign Affairs in the position of first secretary position at the Royal Thai Embassy Washington two years later he resigned from his post and returned to Thailand. During this time, He studied various academic fields such as history, astrology and literature. Prince Nakkhatra Mangala represented the Ministry of Foreign Affairs as the
ambassador of the kingdom of Thailand to the
Court of St James's in the United Kingdom, and to the government of France. He was the one who made his daughter, Mom Rajawongse
Sirikit Kitiyakara fall in love with King
Bhumibol Adulyadej by sending his daughter to help take care of the king when he was car accident in
Switzerland in 1950. After he arranges for his daughter to be married with King
Bhumibol Adulyadej, he was appointed as member of
The Privy Council in Rama XI reign and promoted to rank General in Royal Thai Army. == Issue ==