Japan's new military strategy explained in 60 seconds
17 December 2013 Last updated at 10:38 GMT
Japan has announced it is increasing its defence spending, investing in hardware including drones, stealth aircraft and an amphibious force.
This marine unit will be capable of retaking islands, a development widely seen as a direct response to China's stepping up of claims to disputed islands in the East China Sea.
Rupert Wingfield-Hayes reports from Tokyo.