Stop-loss is a term primarily used in the United States military. In the U.S. military, it is the involuntary extension of a service member's active duty service under the enlistment contract in order to retain them beyond their initial end of term of service (ETS) date and up to their contractually agreed end of obligated service (EOS). It also applies to the cessation of a permanent change of station (PCS) move for a member still in military service. Stop-loss was used immediately before and during the first Persian Gulf War. Since then, it has been used during deployments to Somalia, Haiti, Bosnia, Kosovo and after the September 11 attacks and the subsequent War on Terror.