IDF stands for Israel Defense Forces, which is the military of the State of Israel. It comprises ground forces, air force, and navy. The IDF was established on May 26, 1948, and began to operate as a conscript military, drawing its initial recruits from the already-existing paramilitaries of the Yishuv. Since its formation, the IDF has participated in every armed conflict involving Israel. Military service is compulsory for Jewish, Druze, and Circassian citizens over the age of 18. Men are required to serve three years, and women are required to serve 20-21 months. However, there are some exemptions, such as for Israeli Arabs, religious women, married individuals, and those deemed unfit medically or mentally. The IDF is unique among the militaries of the world due to its regulated conscription of women since its formation.