The Military Intelligence Bureau responsible for external intelligence was also capable of overseeing domestic affairs. It dispatched a large number of spies to infiltrate other countries, allowing them to gain control of some foreign key sectors and thus uncover spies sent by enemies within the country.
After the United Kingdom, France, and Australasia signed the Counter-Infiltration Treaty, counter-espionage and counter-infiltration efforts among the three countries became much easier.
Investigating some false identities became easier as well, allowing Australasia to pay closer attention to the counter-infiltration efforts of the United Kingdom and France.
Just half a month later, the Intelligence Department of Australasia made a discovery.
The discovery was made by the Foreign Intelligence Department, which is the Military Intelligence Bureau. The situation involved the British, who had been heavily infiltrated by the enemy.