National Army Day is observed in Iran every April 18, commemorating the anniversary of the establishment of the Islamic Republic of Iran Army (IRIA). The IRIA is one of the branches of the Iranian Armed Forces, alongside the Revolutionary Guards and Law Enforcement Force. The current Iranian Army was formed in 1923, following the 1921 Persian coup d'état, and adopted its name after the Islamic Revolution in 1979. The regular army comprises conscripts, professionals, and reservists, with an estimated strength of 700,000 soldiers as of 2007. Celebrations typically include military parades showcasing the latest advancements in the country's defense capabilities. This day highlights the importance of the military in Iran's national identity and security.