on February 20, 1981, the "PV-4-A" and "PV-4-B" (Old ). On February 21, 1981, the Aviation of the Peruvian Army destroyed the last military installations of the Army of Ecuador that were still in the Peruvian territory. The Peruvian operation was a success, the outpost of Falso Paquisha, that was occupied by the Ecuadorians, was taken on February 5, 1981, by Peruvian troops. The conflict, which occurred in a then non-demarcated area of the common border between Ecuador and Peru, ceased with the Ecuadorians being expelled from the slopes and driven back to the summit of the Cordillera del Cóndor. The Organization of American States (OAS), had to intervene through the Sorrosa-Du Bois Act, setting the location coordinates allowed for border troops, ratifying the condition of the mentioned mountain range as a natural boundary between the two countries. According to a Peruvian journalistic information, which shows a photo that shows the capture of a powerful machine gun system with 4 guns of .50 (12.7 mm) caliber in “False Paquisha”, the installation of this type of armament represented the symbol of the gravity of the premeditated Ecuadorian invasion in Peruvian territory, through the Cordillera del Cóndor. According to Peruvian sources, only a detachment of high strategic value justifies the installation of a weapon of these characteristics. Known versions after the eviction of the Ecuadorian troops, between January 28 and February 1, 1981, confirm that this frustrated occupation was planned since 1977, when the first clashes between border patrols began to occur. Another second machine gun of the same characteristics would be captured by Peruvian soldiers in the "False Machinaza" Post (named by the Peruvians "Jiménez Banda 2") which was another of the positions invaded by Ecuadorians. As a result, the Peruvian and Ecuadorian governments, with assistance of each one of the Guarantors, agreed to separate their forces. This "gentleman's agreement" remained in effect throughout the 1980s, with various measures taken to codify conduct of patrols encountering one another in the disputed area. The meeting concluded with a resolution that announced a cease fire in the conflict zone, and noted that both countries had accepted a commission of representatives from the guarantor countries to safeguard the observance of the cease fire and establish conditions for peace between Peru and Ecuador. Context of the "gentlemen's agreement." To avoid the disaster of 1941 in regard to loss of civilian lives and a possible invasion