[citation needed] In March 1933, Pridi Banomyong, a Minister of State and a member of the People's Party, was attacked verbally by the constitutional monarch King Prajadhipok (King Rama VII) as a communist following Pridi's submission of the Draft National Economic Development Plan, or the "Yellow Cover Dossier", to the National Assembly.

This led Thawan Ritthidet (Thai: ถวัลย์ ฤทธิเดช), a private citizen, to file a lawsuit against the king, accusing him of intervention in political, state, and economic affairs.

[citation needed] On 20 June 1933, a senior army officer and member of the People's Party, Colonel Lord Phahon, seized power in the 1933 Siamese coup d'état, overthrowing the government of Manopakorn.

[citation needed] The counter-revolutionary rebellion that ensued, led by National Salvation Group (คณะกู้บ้านเมือง) under Prince Boworadet and other royalty, is often regarded as another royalist attempt to undermine the People's Party and its revolutionary government, because major participants had relations with royal family.

The rebels' chief motive declared in an ultimatum was their concern that Phahon and Pridi had "encouraged the people to despise the King Prajadhipok..." Others[who?]

[1]: 247 The Special Court's "Decision on the Insurrection" noted that Prince Boworadet had once consulted General Phahon and Phaya Srisith about the plan to change the government.

At the end of July, Phibun and Supha sent a circular to a number of prominent individuals warning them to "exercise peace of mind", otherwise the "party will be forced to bring stringent measures to bear on you."

[4] Prince Boworadet plotted with Colonel Phraya Sri Sitthi Songkhram (Thai: พระยาศรีสิทธิ์สงคราม), the commander of the military in Bangkok, to stage a coup d'état to unseat the Phahon government and replace it with a more traditional one.

On 12 October, troops from the northeast of the country marched on Bangkok, seized Don Mueang Aerodrome, and entered the northern suburbs,[5][4]: 77  occupied the area around Bang Khen.

[6] Major Luang Seri Somroeng Rit (Thai: พันตรีหลวงเสรีเริงฤทธิ์) was appointed (under truce) to ask the rebels to surrender, under a government offer of amnesty.

Faced with the prospect of a full-scale battle to remove the existing leadership, Boworadet adopted a more conciliatory approach by entering into negotiations in which he called on the government to allow the king a greater political role.

Phahon, in a radio speech, revealed the king's telegram expressing his regret for the rebels' action to appeal for popular support, which got a warm response.

[2]: 209 The government appointed Lieutenant Colonel Plaek Pibulsonggram (Phibun), one of the 1932 coup makers, to command the Bangkok forces and put down the rebellion.

[5]: 265  Artillery was augmented by an armoured car and a tank force commanded by Phibun's friend, Lieutenant Colonel 'Luang Amnuai Songkhram (Thom Kesakomon) (Thai: หลวงอำนวยสงคราม (ถม เกษะโกมล)), who would later be killed in combat.

[6] On 16 October, government forces recaptured Don Mueang Airport on the outskirts of the city and drove the rebel troops back along the northeastern railway line.

Much destruction was done to the infrastructure of Bangkok (railways and bridges) and the surrounding area, including the Don Mueang Aerodrome, from artillery bombardment, bombing, and fire.

The government broadcast a radio appeal to rebel troops to surrender and offered a ten thousand baht reward for the capture of Boworadet.

The former was a representative of the genuine discontent with the People's Party and would therefore have won, had it not been hampered by the latter led by Prince Boworadet, 'No movement' emphasized the king, 'which had for its apparent object the restoration of the old regime could possibly succeed.

Based on a report of the special court of 1939 and eyewitness's memoirs, Nattapoll argues that King Prajadhipok established a large anti-revolutionary underground network consisting of the royal family, secret agents, assassins, military officers, civil servants and journalists—all of them loyal to the old regime.

He defended the validity of the sources writing that royalist witnesses are more likely to tell the truth as the political atmosphere now in Thailand favors highlights of the former king's role in bringing down the revolutionaries.

King Prajadhipok made a personal donation of 200,000 baht, and mandated the combined army infantry units from the northeast should be the rebels' principal troops.

Before the rebellion broke out, King Prajadhipok began to strengthen the guard of Klai Kangwon Palace in Hua Hin by ordering machine guns and reinforcement troops where he resided after the 1932 revolution.

Memoirs of His Majesty's secret agent uncovered an attempt to assassinate the leader of the People's Party by snipers hired by royalists prior to the start of the rebellion.

Shortly thereafter, the king's private secretary issued a statement that expressed His Majesty's regret over the "suffering caused by the civil war" and announced a donation of 10,000 baht to the Red Cross.

Prajadhipok reportedly also secretly funded the rebellion with a sum 20 times larger than the Red Cross donation, a charge some consider questionable.

Although there are controversies about King Prajadhipok's role in the rebellion, the result was a blow to royalist and conservative power, as the rebels had claimed to be fighting in his name.

The Promoters relied on a host of non-democratic measures to stave off the royalist challenge to the constitutional regime and in the immediate aftermath placed Siam on a track to military dictatorship.

[12] In 2016 the monument was moved to Bang Khen District's Lak Si Circle as it had stood purportedly in the path of construction of the Sukhumvit Line of the BTS Skytrain.

The army's statement included this: "The heroic deeds and sacrifice of Prince Boworadet and Phraya Si Sitthisongkhram deserved to be recognized as protectors of the monarchy institution and an attempt to ensure that Thailand has a truly democratic system."

The army's ceremony came two and half years after the mysterious removal of a monument commemorating the defeat of the Boworadet rebellion in the Lak Si area of Bangkok.