Saint Vartan, also known as Vartan Mamikonian, was a prominent Armenian military leader and martyr who lived in the 5th century. He is best known for his role in the Battle of Avarayr in 451 AD, where he led Armenian forces against the Persian Empire. This battle was significant in defending Armenian Christianity and culture against Zoroastrianism. Vartan is celebrated as a national hero in Armenia, symbolizing the struggle for religious freedom and national identity. His legacy is honored annually on Vartanants, a feast day that commemorates his bravery and sacrifice for the Armenian people and their faith.