Following the Siamese Revolution of 1932, Prince Rangsit did not involve himself in politics, but was nevertheless seen as a threat by the Pro-Fascist military government of Major General Phibunsongkhram, which arrested the Prince under charges of treason in 1938. This was possibly due to his position as the most senior prince remaining in the country at the time. In prison he spent much of his time in meditation and in the writing of a journal which recounts his childhood memories and experiences of traveling to Europe for the first time in 1899. On 28 September 1943, having been jailed for 4 years and 9 months, Prince Rangsit was released by the Phibun-government (1 year prior to the release of other political prisoners originally on the covert prison of Tarutao Island since 1941 before being relocated to the Island of Koh Tao in 1944). Along with the release of Phibun's other political prisoners, Prince Rangsit's titles were permanently restored to him by the Khuang-Pridi government which came to power following Phibun's forced resignation in May 1944.