Brazil-Argentina War
Argentine Soldiers during the Defense of The Fourth Line.
Argentine Soldiers during the Defense of The Fourth Line.
Date July 11th 1982 - April 24th 1984
Place South America
Result Brazil Victory
Territorial changes Argentina forced to return Chile and the Falkland Islands
Flag of Brazil Brazil Flag of Argentina Argentina
Flag of NATO Supported By: NATO Flag of the Soviet Union Supported By: Soviet Union
Commanders and leaders
Flag of Brazil João Figueiredo

Flag of NATO Ronald Reagan
Flag of NATO Margaret Thatcher

Flag of Argentina Leopoldo Galtieri

Flag of the Soviet Union Yegor Ligachev

620 813 912 032
Casualties and losses
103 567 304 421
Non-military: 596 894}

The Brazil-Argentina War was the first of two major conflicts that took place in South America during the World War 3 period.


In early 1982 Argentina launched an amphibious assault on the Falkland Islands. Margret Thatcher wanted an immediate military response, but she was out voted. It was decided that the best response would be a peaceful solution, and after months of diplomatic talks, it was agreed to let Argentina keep the Falklands in exchange for use of naval bases on the Falklands. Argentina then went on to invade Chile thinking they could easily get away with it. Brazil decide to aid Chile and sent them a large amount of supplies, from food to weapons. Argentina demanded that Brazil cease all aid to Chile. Brazil refused almost immediately. In a speech Leopoldo Galtieri announced that Brazil and Argentina were now in a state of war.

Argentina Invades, Soviets Intervene

Following the initial hostilities, Argentina invaded Uruguay and southern Brazil. Brazil mobilized its defences and easily pushes back most of the Argentine soldiers. Argentina begins to have trouble defending so they ask for help from other nations. The USSR agrees to send a large amount of soldiers to Brazil. Seeing the large amount of Soviet troops as a threat to most of the Americas, NATO agrees to send a large amount of weapons and supplies to Brazil. Argentina tests a nuclear weapon but it is a major failure as it does not detonate, this nuke was going to be used on Rio de Jeneiro as a quick end to the war.

Soviet-American Standoff

Eventually the Soviet Armed Forces entered the city of Rio de Janeiro. Intense house-to-house fighting took place. The first tactical nuclear weapon ever used in combat was detonated on January 2nd, 1984. The nuclear device was detonated in a small village just outside of Rio. It is unknown whose it was, it wiped out an entire division of Soviet tanks, as well as a division of Brazilian infantry. The United States decided that it was time to step in, the United States, France, Canada, and the United Kingdom formally declared war on Argentina on January 4th. As NATO soldiers began to land on the Falkland Islands and Chile, the Soviet Union demands that NATO stand down. NATO refuses and tensions mount.

Soviet Withdrawal

Ligachev orders all units in Argentina to be pulled out. Most are sent to East Germany, North Korea, Czechoslovakia and Karelia. The United States push forward into Argentina. Brazil begins to push the Argentine Forces back, Argentina makes a desprete stand at the Fourt Line (Brazil-Uruguay Border) against the Brazilian Armed Forces. The Fourth Line is eventually broken after the Canada and France launch an amphibious assault on the Uruguay coast. This forces the Argentine Army to pull back forces to defend against Canada and France. Brazil broke through the fourth line and Uruguay was liberated and became a Brazilian puppet state. Buenos Aires fell on April 24th, 1984. Argentina unconditionally surrendered that day. Leopoldo Galtieri was arrested and hung for war crimes shortly after the end of the war.