On July 22, 1994 Lieutenant Yahya Jammeh lead the coup that overthrew the government of Gambia because of the leadership failing to bring about the reforms promised. This new government has lasted since then and each July 22 is celebrated as the anniversary of the new country. Links: http://observer.gm/africa/gambia/article/18-years-of-the-july-22nd-revolution-gambia-triumphs-1 http://www.answers.com/topic/gambia-revolution-day Happy Revolution Day The Gambia.