 The Japanese occupied the island and installed numerous bunkers, fortifications and gun emplacements.Their remnants can still be seen, though most have been re-purposed or removed.On 6 May 1943, the Imperial Japanese Navy's submarine, the "I-29", tasked with a "Yanagi" mission, landed the Indian leader and freedom fighter, Netaji Subhash Chandra Bose and his lieutenant, Abid Hasan at Sabang on Weh Island, instead of the Penang, to avoid detection by British spies.