Taiwanese troops were deployed for a mock urban street battle in the latest drill preparing forces against China. Soldiers from two platoons faced off in a simulated battle, firing at each other from houses and sandbag barricades. Tanks rolled down a street in a mock-up town complete with signs for pharmacies and beer brands. "The Chinese communist troops' battle plans will be invading and landing firstly from coastal towns, then the fighting will progress into more populated residential and commercial areas and lastly push into mountainous villages," said Kiwi Yang, an instructor at Army Infantry School. Democratic Taiwan lives under constant threat of an invasion by authoritarian China, which claims the self-ruled island as part of its territory to be seized one day -- by force if necessary. Watch the full video for more.