美国的军事系统拥有约6千亿美元/年的国防预算，是世界上最大的，超过所有其他国家国防预算的总和。有近300万员工，占GDP的3.5％，哇，疯了。国防部目前有九个统一的战斗指挥部 - 三个功能部门和六个地区部队。功能性指挥部跨越地理边界在全球范围内运行，并为地区指挥部和武装部队提供独特的能力，而地区指挥部在明确划定的行动区域内运作，并且军事重点在区域内。

American military system has about 600 billion / year defense budget, the largest in the world , more than the sum of all other countries defense budget. There are almost 3 million employees, 3.5 % of GDP, wow, crazy. There are currently nine unified combatant commands in the Department of Defense – three functional and six geographic. Functional COCOMs operate world-wide across geographic boundaries and provide unique capabilities to geographic COCOMs and the Armed Services, while geographic COCOMs operate in clearly delineated areas of operation and have a regional military focus.

http://www.centcom.mil/ABOUT-US/COMPONENT-COMMANDS/

地区联合司令部

 ▪CENTCOM：美国中央司令部，MacDill空军基地，佛罗里达州坦帕市

 ▪非洲：美国非洲司令部，Kelley Barracks，斯图加特，德国

 ▪EUCOM：美国欧洲司令部，Patch Barracks，斯图加特，德国

 ▪NORTHCOM：美国北方司令部，彼得森空军基地，科罗拉多州

 ▪INDOPACOM：美国印度太平洋司令部，H.H.营地史密斯，夏威夷

 ▪SouthCOM：美国南部司令部，佛罗里达州迈阿密

GEOGRAPHIC COMBATANT COMMANDS

 ▪ CENTCOM: U.S. Central Command, MacDill Air Force Base, Tampa, Florida

 ▪ AFRICOM: U.S. Africa Command, Kelley Barracks, Stuttgart, Germany

 ▪ EUCOM: U.S. European Command, Patch Barracks, Stuttgart, Germany

 ▪ NORTHCOM: U.S. Northern Command, Peterson Air Force Base, Colorado

 ▪ INDOPACOM: U.S. IndoPacific Command, Camp H.M. Smith, Hawaii

 ▪ SOUTHCOM: U.S. Southern Command, Miami, Florida

功能性组合司令部

 ▪SOCOM：美国特种作战司令部，MacDill空军基地，佛罗里达州坦帕市

 ▪TRANSCOM：美国伊利诺伊州斯科特空军基地的美国运输司令部

 ▪STRATCOM：美国战略司令部，内布拉斯加州奥夫特空军基地

FUNCTIONAL COMBATANT COMMANDS

 ▪ SOCOM: U.S. Special Operations Command, MacDill Air Force Base, Tampa, Florida

 ▪ TRANSCOM: U.S. Transportation Command, Scott Air Force Base, Illinois

 ▪ STRATCOM: U.S. Strategic Command, Offutt Air Force Base, Nebraska

https://en.m.wikipedia.org/wiki/

NATO

https://www.nytimes.com/topic/organization/north-atlantic-treaty-organization

https://www.nato.int/

信不信由你，甚至加拿大也是北约的成员。美国，东欧国家，土耳其是北约成员国。

Believe it or not, even Canada is NATO member. America, east Europe countries, Turkey are NATO members.