Top 10, The Quickest Wars in World History. 10. Falklands War. 1982. Ten Weeks. 9. Polish Lithuanian. 1920. 37 Days. 8. Second Balkan. 1913. 43 Days. 7. Greco-Turkish. 1897. 34 Days. 6. Synoviatnomese. 1979. 27 Days. 5. Georgian Armenian. 1918. 25 Days. 4. Serbo-Bolgarian. 1885. 15 Days. 3. Indo-Pakastani War of 1971. 14 Days. 2. 6-Day War. 1967. 6 Days. 1. British Sanzibar. 1896. 38 Minutes.