Louis would not be content as puppet king for very long. He was unhappy with the way he, his family and the church were being treated. The moderate politicians were losing support to more radical ones. But even though he was really a prisoner in the Tuileries Palace, Louis had allies in the army and other countries who would have supported the king over the politicians. Louis and Marie Antoinette planned to escape from the Tuileries on the night of June 21, 1791, disguised as servants. The royal family travelled towards the Fortress of Montmédy, which was a base for soldiers who supported the king and was on the border with the Austrian Netherlands. On their way to Montmédy, they were caught in the village of Varennes and forced to return to Paris. This incident became known as the flight to Varennes.