The drills are part of annual Han Kuang exercises that simulate an attack by China, which claims Taiwan as its own territory to be annexed by force if necessary.
Support for Taiwan has remained strong under President Donald Trump and the island’s request for new warplanes and other armaments have been seen as receiving a friendly reception in Washington.
Taiwanese began voting in midterm local elections Saturday seen as a referendum on the independence-leaning administration of President Tsai Ing-wen, amid growing pressure from the island's powerful rival China.
China claims Taiwan as its own territory, to be conquered by force if necessary, and has recently stepped up its threats by staging military exercises near the island, flying bombers and fighter jets in loops around it and sending its aircraft carrier through the Taiwan Strait.