Yerkrapah Day is observed in Armenia every May 8 to celebrate the Yerkrapah Volunteer Union, which represents veterans of the First Nagorno-Karabakh War, particularly those who fought in the Yerkrapah Volunteer Battalion. This battalion was significant during the war, inspired by historical fedayi groups that protected Armenian villages. Established in 2001, Yerkrapah Day commemorates the Battle of Shusha, a pivotal military victory for Armenia in 1992. Although it is an official holiday, it is not a non-working day unless it falls on a weekend, and it is primarily celebrated by members of the Yerkrapah Volunteer Union as their professional holiday. The day is marked by various ceremonies and events, particularly leading into the following day, which is Victory and Peace Day, celebrating the liberation of Shushi and the end of World War II.