During the Battle of Karakilisa in May 1918, Dilijan was the main base of the Armenian military groups, under the commandment of General Tovmas Nazarbekian, assisted by Garegin Nzhdeh and Nikolay Gorganyan. Playing a key role in organizing the troops for the battle. Following the brief independence of Armenia in 1918-20, Dilijan became part of the newly founded Armenian Soviet Socialist Republic. In 1930, it was part of the newly formed "Ijevan raion", until 1958 when Dilijan became a town of republican subordination.