The Pacific Theater was a crucial portion of the World War, fought predominantly between the Empire of Japan and the Kingdom of America in Southeast Asia, with another major front being fought between Russian Empire, Korean Empire, and Han China against Japanese allies.
The Conflict
Prelude
The tensions between America and Japan had been brewing for years. Following the Great War, Japan was restricted to having a limited military as prescribed in the Great Treaty. However, Japan entered the Russo-German War against the Russian Empire, being granted reprieve on much of these restrictions. America had growing concerns of the threat Japan posed in the Pacific region, and worked to negotiate the Japanese-American Naval Treaty. When Japan created the Greater East Asia Co-Prosperity Sphere, America accused them of violating the treaty terms.
The German Empire had been working on their colony in East Papua, but the Japanese ally of Papua created turmoil. Following the declaration of the Anglo-German War, Germany wished to have more allies in the region, and agreed to lease the island of Guam to America. Japan demanded the agreement be annulled, but America ignored the demands. A carrier strike group from the American west coast was ambushed, leading to the declaration of war. America requested German support, and the Germans agreed. This brought Great Britain into the war as well, having an alliance with Japan.
Deployment
America began to enact a tactic of island hopping, securing the major islands occupied by Japan and their allies. The East Indies were first targeted, as America attempted to work out an agreement with the Kingdom of Hawaii. Archduke Thomas of America negotiated with the Sultan of Java, who agreed to switch sides in exchange for the formation of the Javan Empire.
Conditions
The Dominion of Australia argued against entry into the war, but was compelled to join the British war effort being a member of the Commonwealth of Nations. This led to protests, and even a riot which led to the burning of the Australian Parliament House. A republic was declared, and the Australians joined the American war effort.
The Engagement
The Island hopping of the American military ensured engagement of the Japanese forces and their allies remained in the region. Many of the members of the GEACPS revolted against Japanese rule, with a need for the counterinsurgency units to train the rebels into a formidable fighting force.
Within the Viceroyalty of the Philippines, the "Silent Sisters", a group of Filipino women specializing in reconnaissance and sniper warfare, began to harass the Japanese war effort. With the motto of "Stillness and Silence", when the missions became too costly, many of the Silent Sisters were expatriated to the American South for their protection.
Outcome
The Pacific Theater ended with the completion of Operation Downfall, the largest and deadliest amphibious invasion in history. America suffered an estimate of over 2 million casualties, while Japan suffered over 10 million military and militia. America occupied the main island of Honshu, Australia occupied Shikoku, and the Javan Empire occupied Ryukyu. Manchukuo was partitioned between Russia and Korea. America also obtained the Viceroyalty of the Philippines.
Aftermath
The deadly nature of the Pacific Theater convinced the German Empire to look to other means of ending the war with Britain. Kaiser Wilhelm III authorized Operation Donnerkeil, which saw the first usage of an atomic bomb in warfare.
King James I of America appointed Baron Douglas MacArthur as the Viceroy of the Philippines.
Historical Significance
Legacy
Notable for his nature in combat in the Pacific Theater and role as the Prince Regent of Sequoyah, Archduke Thomas was elected as the King of Australia, adopting the regal name of Richard.
I love the sound of the Silent Sisters. Are they based on any real life organisation?
Explore Etrea | WorldEmber 2025
I would say I took some inspiration from the Night Witches in WW2, and all female bomber squadron in Russia