On November 11, 2008, President n3m0 of Indonesia asked the congress to declare war on Argentina. The President had prepared an attack to Argentina at the same month, but because of a bug, the attack was canceled.
During Operation French Toast, Argentina, then part of ATLANTIS, did its part for the alliance by attacking the Indonesian-occupied region of Western Cape, originally a province of South Africa. It did this three times, in order to distract the Indonesians. Still, Operation French Toast eventually failed, ATLANTIS invasion of France was becoming a slaughterhouse, with all ATLANTIS forces being pushed out of France.
On December 29, 2008, Indonesia finally attacked and conquered the Argentinian region of Pampas, with a very large proportion of Argentinian citizens and a Q5 defence citizen. This body blow caused much turmoil among ATLANTIS forces, resulting in morale blows, chaos among the Argentine populace (many of whom accused Romania of being too busy seeking its own imperialist gains in Russia as opposed to helping Argentina repulse Indonesia); meanwhile, Indonesia conquered Patagonia. Cuyo was nearly conquered, and was a few hours away from falling victim to yet another annexation, but Siddy, the President of Argentina, managed to halt any more destruction to his nation by proposing an unofficial peace treaty with Indonesia (and Brazil), both of which agreed. Soon after, Argentina left ATLANTIS; it later joined PEACE, together with Chile and Slovenia.
Pampas was regained, a full two months after its taking, by the Argentinians on the 21st of February 2009. A resistance war was started by gagah of Indonesia, and Argentina obtained 2.83 gold from Indonesia. Soon after, on the 22nd of February, Argentina and Indonesia proposed a peace treaty: it passed on the 23rd, and a war that had stretched on for four months was finally over. The day after, in the late hours of the 23rd of February, Indonesia's President aban started a resistance war for Patagonia, returning it to Argentinian control.
This war was the last part of World War II, waged between ATLANTIS and PEACE. It established PEACE as the more dominant alliance, gave it more members, lost ATLANTIS a member (and, arguably, potential member Chile), and showed that it had better organization. Also, it exposed cracks between ATLANTIS's nations, most notably between the rest of the members and Romania, which was concentrated on annexing Russia. Thus, the outcome of the war was a resounding slap in the face for ATLANTIS: It had started the war full of confidence in its abilities, but had ended up beaten on all fronts, from Europe to South America.
Also, the aftermath of the war may have an impact on South Africa. The original purpose of the Indonesian conquest of eSA was a link to South America, in order to reach Argentina, move through, and reach America, then fight it. With all of South America now part of PEACE, it is unknown whether Indonesia will be more receptive to talks with South Africa to regain its 4 captured coastal regions, since there is no longer any need for the provinces (except potentially for the Q5 hospital that is in Western Cape), considering that the coastal regions have virtually no resources of note to Indonesia (though they are to South Africa).