In 1683, after being charged with plotting against the King, Fletcher fled Scotland to join with English opponents of King Charles in the
Netherlands where he gained the confidence of
James Scott, 1st Duke of Monmouth, being given command of the cavalry for the
Monmouth Rebellion. Fletcher wanted to strike at the country militia while they were being formed up, and appropriated a fine horse belonging to the leading local sympathizer,
Thomas Dare, who was shot dead when he became threatening in the ensuing argument. Monmouth was forced to send Fletcher away. Monmouth's forces failed to pursue a timely offensive strategy, and were defeated. After escaping from a Spanish prison, Fletcher fought in Hungary against the Turks before joining
William of Orange, with whom he returned to Scotland in 1688, but his alliance with the Prince of Orange faded when it became clear William II - as he was in Scotland - was only interested in using the country to help fight foreign wars, and he drifted into the more oppositional
Commonwealthmen faction for who he would write leaflets. His estates were restored to him and, increasingly, Fletcher defended his country's claims over English interests as well as opposing royal power. In 1703, at a critical stage in the history of Scotland, Fletcher again became a member of the Scottish Parliament as member for Haddingtonshire. Now
Queen Anne was on the throne and there was a campaign to join England and Scotland in a parliamentary union, thus closing the "back door" to England that Scotland represented. == Darién Scheme and the Act of Union ==