Siamese revolution of 1932

War

The Siamese revolution of 1932 or Siamese coup d'état of 1932 was a coup d'état by Khana Ratsadon which occurred in Siam on 24 June 1932. Wikipedia

Start date: June 24, 1932

Result: Coup successful: Establishment of a constitutional monarchy in Siam; Ended the absolute monarchy under the Kings of Siam