The Sandinista Popular Army (or People's Army; , EPS) was the military established in 1979 by the new Sandinista government to replace the National Guard, following the overthow of Anastasio Somoza Debayle. In post-Sandinista Nicaragua, it has been remolded into the National Army of Nicaragua. Joaquín Cuadra was chief of staff, serving Defense Minister Humberto Ortega. A draft, called the Patriotic Military Service (), (SMP) was instituted in 1983. It later became Obligatory Military Service (Servicio Militar Obligatorio) (SMO).The special forces Tropas Pablo Ubeda initially came under the Ministry of Interior and then the BLI'S were Created.