The invasion in early 1942 was swift and complete. By January 1942, parts of Sulawesi and Kalimantan were under Japanese control. By February, the Japanese had landed on Sumatra where they had encouraged the Acehnese to rebel against the Dutch. On 19 February, having already taken Ambon, the Japanese Eastern Task Force landed in Timor, dropping a special parachute unit into West Timor near Kupang, and landing in the Dili area of Portuguese Timor to drive out the Allied forces which had invaded in December. On 27 February, the Allied navy's last effort to contain Japan was swept aside by their defeat in the Battle of the Java Sea. From 28 February to 1 March 1942, Japanese troops landed on four places along the northern coast of Java almost undisturbed. The fiercest fighting had been in invasion points in Ambon, Timor, Kalimantan, and on the Java Sea. In places where there were no Dutch troops, such as Bali, there was no fighting. On 9 March, the Dutch commander surrendered along with Governor General Jonkheer A.W.L. Tjarda van Starkenborgh Stachouwer.