 All affected units of the Common Army, the Imperial-Royal Landwehr and the Royal Croatian Home Guard came under that unified command.Immediately after the Armistice of Villa Giusti, Italy began occupying parts of the Kingdom of Dalmatia that had been promised to it under the secret Treaty of London.On 1 December 1918 the unification of the State of Slovenes, Croats and Serbs with the Kingdom of Serbia was declared, forming the Kingdom of Serbs, Croats and Slovenes.