On April 22, 1944, General Douglas MacArthur made a daring and strategic move that would alter the course of World War II in the Pacific theater. Relying on crucial intelligence obtained through Communications Intelligence (COMINT) reports, he launched a bold attack on Hollandia, New Guinea, deep behind enemy lines. This pivotal event marked a turning point in the Pacific campaign, and its success was due in large part to the invaluable information gathered through cryptanalysis and codebreaking. In this article, we will delve into the details of this audacious operation and the crucial role played by COMINT in its success.