Field Marshal Phibunsongkhram, the Prime Minister of Thailand during the Pacific War, is said to have been a dictator, a chauvinist and a militarist, and to have erred in trying to revive old Siam by military means. But the minutes of the Cabinet conference, Phibun's speeches, the Ratthaniyom principles, Thai Code of Valour and Phibun's own behavior during his regime reveal his thoughts and actions as a campaign to foster the civilization of Thailand and to restore her honor and face among nations.
  He renamed the country "Thailand" on June 24, 1939 because the old name Siam was associated with absolute monarchy, Westerner worship, arbitary Chinese action, a national inferiority complex and old customs. It was his aim to dispel these associations and to prompt constitutional monarchy, the civilization of the country and the modernization of the people.
  The Phibun regime intended to reduce Western political power and Chinese economic power. Japan also had an interest in destroying Western power in Southeast Asia and replacing it with her own. Phibun used Japanese power to carry out his policy. Japan treated Thailand as an important nation in Southeast Asia before the Pacific War, so she could move her forces through Thai territory and obtain necessary facilities. Phibun cooperated with Japan for only one year during the war, then switched to the promotion of an anti-Japanese strategic plan, because he thought that cooperation with Japan did not bring honor and face either to Thailand or to himself.