The decision last week, which was revealed on Ynet, drew condemnation because of the government's efforts to pass a draft bill that would exempt Haredi men from service.
According to the military, soldiers who volunteer to serve in the elite units do so with the understanding that their service could be extended for up to a year after they receive special training to bring them to the level required in such units.
Zamir also ordered the establishment of a commission to review all aspects of the matter including operational needs and the demands of the troops during the war.
The IDF is experiencing a shortage of some 10,000 soldiers since the war began. Some 900 IDF soldiers have been killed and tens of thousands injured since the October 7 massacre.