More than 6,700 U.S. troops have died in the wars in Iraq and Afghanistan . Here is a look at the numbers behind the sacrifices of American military veterans of current and past wars : . The United States has spent more on its military since 2001 than any other country, according to a report by the Stockholm International Peace Research Institute. Six wreaths are engraved on the Tomb of the Unknowns , in Arlington National Cemetery .
More than 6,700 U.S. troops have died in the wars in Iraq and Afghanistan . The United States has spent more on its military since 2001 than any other country, according to a report by the Stockholm International Peace Research Institute. Six wreaths are engraved on the Tomb of the Unknowns , in Arlington National Cemetery .