Honduran Air Force
Due to the ongoing crisis, El Salvador severed diplomatic ties with Honduras on 26 June and declared war on 14 July 1969. The Salvadoran Air Force attacked the Toncontín International Airport to disable the Honduran Air Force and the Salvadoran Army launched a two prong invasion following two major roads connecting the two countries. After two days, the Honduran Air Force began attacking Salvadoran air bases in Chalatenango and La Unión, halting the Salvadoran advance. After four days of fighting, the Organization of American States (OAS) negotiated a cease fire on 18 July. El Salvador withdrew its troops on 2 August and the OAS promised to guarantee the safety of the Salvadorans in Honduras. Around 2,000 people, most of whom were civilians, were killed during the war.