The Democratic Revolutionary Alliance (Spanish: Alianza Revolucionaria Democrática or ARDE) were the Southern Front guerrillas in Nicaragua that fought against the Marxist elements of the original Sandinista Revolution in 1979. Despite being one of the Contra forces, they maintained an ideological distance from the U.S.-backed Nicaraguan Democratic Force.
Formed by Edén Pastora Gómez in 1982, it united his Sandino Revolutionary Front (FRS) with such groups as the Nicaraguan Democratic Movement (MDN), MISURASATA and FARN. A.R.D.E. quickly gained momentum in the southeast of Nicaragua. The San Juan River was "liberated" by ARDE, and five strategic bases were formed, including Sarapiquí and La Penca.
Pastora's leadership can charitably be described as mercurial. Planes, helicopters, weapons and food supplies meant for combatants risking their lives frequently were sold to third parties. Organizational chaos reigned, as Pastora feared that institutional structures could pose a counterweight and threat to his charisma-based leadership.
As ARDE's regional field commanders penetrated deeper and deeper into Nicaragua they became increasingly frustrated at the squandering of resources, the constant bickering with other factions of the armed struggle against the alleged communist dictatorship, and Pastora's erratic directives. In 1985, other rebel groups, including former ARDE political head Alfonso Robelo, formed the United Nicaraguan Opposition umbrella group. Fernando "El Negro" Chamorro of the UNO-aligned FARN sought to win over ARDE commanders, and in November, ARDE units encountered Nicaraguan Democratic Force (FDN) elements moving down from the north.