How do Farquhar's political beliefs put him in jeopardy?

Farquhar sympathizes with the Southern cause and once had aspirations of becoming a Confederate soldier. Unable to join in the war efforts, Farquhar looked for other ways to help the Southern army. The appearance of a soldier and news that the Union had fixed bridges and were ready to advance led Farquhar to look for a means of sabotage to hold them back. These actions put his life in danger. 

He was one crazy dude