Budget: $60.5 billion
Active frontline personnel: 146,980
Total aircraft: 936
Although the UK is planning to reduce the size of its armed forces by 20% between 2010 and 2018, it can count on being able to project its power around the world.
The Royal Navy is planning to put the HMS Queen Elizabeth, an aircraft carrier that has a flight deck measuring 4.5 acres, into service in 2020, carrying 40 F-35B joint-strike fighters across the globe.
British army Cpl. Birendra Limbu of the 2nd Battalion, Royal Gurkha Rifles shows his rifle to Afghan children as he secures an area near an Afghan National Police checkpoint outside the town of Lashkar Gah in Helmand Province on July 13, 2011.