Thanchaiyan studied at Wat Rajbopit School and then attended the
Armed Forces Academies Preparatory School as a pre-cadet as a prerequisite for attending
Chulachomklao Royal Military Academy (CRMA). After graduating in Military school, he studied at Command and General Staff College and
Joint Services Command and Staff College in England. Thanchaiyan previously held a position in the
Royal Thai Army as the Commander of the 1st Cavalry Squadron, 1st Cavalry Regiment, King's Guard and moved to
Royal Thai Armed Forces Headquarters as Head of Military Operations of Royal Thai Armed Forces and then Chief of Staff to the Royal Thai Armed Forces. In 2017 he was appointed
Chief of Defence Forces of Royal Thai Armed Forces Headquarters. He also Member of the
National Legislative Assembly. ==Awards==