Collateral Functions of the Department of the Air Force The collateral functions of the Air Force are to  train  forces  to  do  the  following: · Restrain  enemy  sea  power  through  air operations · Conduct   antisubmarine   warfare   and protect  shipping · Conduct  aerial  minelaying  operations UNIFIED AND SPECIFIED COMMANDS The  United  States’  concept  of  the  military establishment is that it is an efficient team of land, naval,  and  air  forces.  This  concept  has  its  base on  the  principle  of  effective  use  of  military  power. This  principle  requires  close  integration  of  the efforts of the separate military services. Unity of effort  among  the  services  at  the  national  level results from a joint effort. The Secretaries of the Army,  Navy,  and  Air  Force,  the  JCS,  and  the various military departments work together in this joint   effort. Under the National Security Act, each military department  and  service  must  coordinate  with the  others.  Each  is  responsible  for  organiz- ing,  training,  equipping,  and  providing  forces to  fulfill  certain  specific  combat  functions and   for   controlling   and   supporting   these forces. The full use and exploration of the weapons, techniques, and capabilities of each department and  service  are  essential  in  attaining  our  national security goals. UNIFIED  COMMANDS A  unified  command  is  a  command,  with  a broad  continuing  mission,  composed  of  signifi- cant  components  of  two  or  more  services  under a single commander. When either or both of the following criteria apply to a situation, it requires a  unified  command: 1.  A  broad  continuing  mission  exists  that requires significant forces of two or more services and a single strategic direction. 2.  Any  combination  of  the  following  exists when   the   situation   involves   significant forces  of  two  or  more  services: a.  A  large-scale  operation  requiring  posi- tive control and tactical execution by a large  and  complex  force. b.  A  large  geographic  area  requiring  single responsibility   for   effective   coordina- tion  of  operations. c.  Command  use  of  limited  logistics  re- sources. The  unified  commands  existing  at  this  time include  the  following: U.S.   European   Command   (USEUCOM) U.S.  Southern  Command  (USSOUTHCOM) U.S.  Pacific  Command  (USPACOM) U.S.  Atlantic  Command  (USLANTCOM) U.S.   Space   Command   (USSPACECOM) U.S.  Transportation  Command  (USTRANS- COM) U.S.  Special  Operations  Command  (USSO- COM) U.S.   Central   Command   (USCENTCOM) Unified  Commander The authority setting up a unified command appoints  a  unified  commander.  This  authority also determines the force structure and assigns the forces and missions and the general geographic area  of  responsibility. The commander of a unified command has a joint  staff,  with  members  in  key  positions  from each service having component forces under the unified  command.  The  joint  staff  requires  a balance in the composition of the forces and the character of the operations. This balance makes sure  of  an  understanding  by  the  commander  of the  tactics,  techniques,  capabilities,  needs,  and limitations  of  each  part  of  the  forces. Each  component  of  a  unified  command  is normally  under  direct  command  of  an  officer  of that  component.  A  unified  commander  usually exercises   operational   command   through   the service  component  or  through  the  commanders 1-8