The Haunting of Borneo
The deaths of nearly 50,000 men came as a shock to the Generals beneath Itami's command, however only the Empress of Japan herself realized just how efficient biological warfare was. Some ground was gained in this stage of the war, as tens of thousands of Japanese soldiers threw themselves into the meat grinder, knowing that they were already dead from the affliction they suffered through.
However, without the Japanese being capable of fielding ample reinforcements to take advantage of this, the Royal Majapahit Army used this opportunity to reclaim ground which had been occupied by the Imperial Japanese Army. It was only with swift action via the use of costal bombardments and bombing campaigns that Itami was able to hold on to her newfound territory.