After Phibunsongkhram's rise to power in 1938, these conflicts became the allegations in the subsequent Songsuradet rebellion.

[3] Thep Phanthumsen was born in a military family on 12 August 1892 at his father's home at Suan Chao Chet (location of Territorial Defense Command in present) on the beginning of Charoen Krung Road, Phra Nakhon Province (later Bangkok).

Because he was an excellent cadet he received a scholarship to study army engineer science in Imperial Germany.

After that, he continued his studies at the commissioned military level until he received the rank of Degen-Fähnrich (Acting Second Lieutenant) and entered the military service in Magdeburg, later he returned to Siam (present-day Thailand) in the year 1915, after a total of 8 years of living in Imperial Germany.

[4] In Siam, he was an engineer who played a huge role in constructing railways in many regions of the country, such as northern line from Khun Tan Tunnel to Chiang Mai Province etc.