The Helventian Valley Revolution was a conflict in the former American state of California between the Soviet Union and its satellite state of the Californian Soviet and the Helvetian states of San Joaquin Valley Republic and the Sacramento Valley Provisional, both of whom would go on to form the New Helvetia Confederation in 1966. Internal fighting began in 1963, when rebel leader, Zachary Birnen lead the capturing of Fort Sacramento, and sized a majority of ammunition and vehicles and retreated to the Serra Mountains,where he lead the Helvetian Uprising of 1965 which caused the Californian Soviet to fall apart completely, and without support from the Soviet Union was unable to regain control, leading to a decisive victory for the Helvetians.