Back in November, Peaceprize winner Barack Obama, announced he was sending 2,500 U.S. Marines to Australia.

April 4, 2012, the first 200 U.S. Marines arrived in Darwin, Australia.

Over the next five to six years the United States will send a total of 2,500 military personnel, including artillery and armored units.

This is part of a new U.S. defense strategy, announced earlier in the year, which also plans to make greater use of Australian naval and air force bases.