In 1914 he made his way to the 8th general congress of Dashnaktsutiun in Ottoman Empire. He was elected to the party's Bureau and mixed with the leaders of the Young Turks. In August 1914 he was jailed as a Russian spy but escaped to Transcaucasia, where he became involved with the Armenian volunteer units who fought with the Russian army. After the disbandment of the units, he attended the Moscow state conference, the Armenian National Congress, and was elected a member of the National Council. Hovhannes Katchaznouni asked him to accompany him on his tour of Europe and America in 1919, but he was refused a visa by the British as they saw him as a radical socialist. In the same year he was appointed to ministry of labour, agriculture and state positions in Alexander Khatisian's Cabinet. His positions carried over to the government of Hamo Ohanjanyan; he also assumed responsibilities for information and propaganda. After the resignation of the government and the failure of Hovhannes Katchaznouni to form a coalition, Vratsian accepted post of Prime Minister on 23 November 1920.