[20211108]IF10543_防务基础：国防部.pdf

https:/crsreports.congress.gov Updated November 8, 2021Defense Primer: The Department of DefenseThe Department of Defense (DOD) was established after World War II through the 1947 National Security Act. At the time, some, including President Truman, took the view that the different components of the U.S. military had been insufficiently integrated to wage World War II effectively. The intention of the 1947 Act was therefore to create, for the first time, an integrated institution that combined the Departments of War and Navy, and to establish a policy architecture for overseeing the newly reorganized military apparatus. Over time, DOD has grown into one of the largest bureaucracies in the world, comprising over 3 million employees stationed across the United States and around the globe. DODs purpose today is to provide the President with the military forces needed to deter war and to protect the security of the country. It does so through five primary sets of institutions, each representing thousands of people and often hundreds of specific offices: The Office of the Secretary of Defense, which helps the Secretary plan, advise, and carry out the nations security policies as direct