Battle of Avarayr
The Battle of Avarayr (Armenian: Ավարայրի ճակատամարտ, romanized: Avarayri chakatamart) was fought on 26 May 451 on the Avarayr Plain in Vaspurakan between a Christian Armenian army under Vardan Mamikonian and Sassanid Persia. It is considered one of the first battles in defense of the Christian faith.