[20170317]IF10618_防务基础：国防预算职能（050）.pdf

https:/crsreports.congress.gov March 17, 2017Defense Primer: The National Defense Budget Function (050) The budget function classification system provides a framework for examining spending patterns of the federal government by category of activity, rather than by agency or type of financing. Within the system, spending categories are called functions, and each is coded with both an explanatory title and numeric code ending in zero (and shown in parenthesis). This defense primer addresses the National Defense Budget (050), which is frequently used to explain trends in military spending but which also includes some activities not conducted by the Department of Defense. What Is the Purpose of the Budget Function System? The budget function classification system organizes the spending of the federal government into categories, or functions, that describe the public purpose of each activity. When spending among all agencies is summarized topically in this way, patterns may be revealed that help analysts identify the overall priorities of the federal government. For instance, in FY2016, spending for National Defense (050) represented 15% of all federal expenditures. This was, for examp