Forças Populares 25 de Abril (English: Popular Forces 25 April) (FP 25 de Abril or FP-25) was a far-left armed organization operating in Portugal between 1980 and 1987. Some of its members had previously been active in the "Brigadas Revolucionárias" (English: Revolutionary Brigades), an armed group with links to the Partido Revolucionário do Proletariado (English: Revolutionary Party of the Proletariat). A total of 18 people were killed by the FP-25 as a result of armed attacks, bombings and confrontations with the police during bank robberies and escape attempts. During a 25 November 1984 attempt, they fired four mortar rounds at the U.S. Embassy, hitting two cars. On January 27, 1985 6 NATO ships including the USS Richard E. Byrd were attacked. Success for the group began in February 198