The First Balkan Alliance (Serbian: Први балкански савез/Prvi balkanski savez) was a system of agreements concluded by the Principality of Serbia in the period of 1866–68 to unite the nations of the Balkans in a common struggle against the Ottoman Empire. The plans for forging this alliance were based on the organization of a major general uprising, as opposed to individual uprisings by the various ethnic groups in Ottoman territory. According to the plans, the Albanians would begin the uprising, followed by Serb and Greek volunteers and finally and simultaneously by the regular armies of Serbia and Greece. According to the plans and agreements, after a successful war against the Ottomans, the Balkan nations would establish a united federation.