By October 1941, British troops had prepared defensive positions in North Kedah. On the morning of 8 December 1941, the Invasion by the Japanese army began. The attack was quickly followed by the advance of General Yamashita's army which had landed unopposed on beaches near Songkla the previous night. A second assault force came ashore, unopposed, on the coast of Petani and advanced towards Betong and Kroh. A third but smaller force landed close to Kota Bahru in Kelantan despite vigorous opposition.