 The law has since gone through several revisions and alterations, most notably in 1959 and 1986.The Security Service Law requires that all citizens of Israel, except those who qualify for the exemptions from service, to service in the various branches of the IDF.Section 2 defines the age appropriate for conscription, and set it at 18–29 years of age for men, and 18–26 for women, based on the Hebrew calendar.