field marshal plaek phibunsongkhram (thai: แปลก พิบูลสงคราม; pibulsongkram or pibulsonggram; 14 july 1897 – 11 june 1964) was a thai military officer and politician who served as the prime minister of thailand from 1938 to 1944 and 1948 to 1957. other name were marshal p. in thailand (thai: จอมพล ป.) and phibun in the west.