Joint Doctrine for Amphibious Operations - Historic Naval Ships ...

Command, Control, Communications, and Computer Systems Support Planning4. C4 Systems Support Duringthe Embarkation PhaseBefore embarkation, planners must providefor adequate C4 systems support between theamphibious force and any external agenciesinvolved in transportation. The CLF willnormally plan and provide LF C4 systems inthe embarkation area, to include coordinatingthe use of established facilities (military orcivilian).5. C4 Systems Support Duringthe Rehearsal PhaseTo test C4 systems equipment andtechniques, plans should provide for a fullscalerehearsal for all elements of theamphibious force as early as the operationalsituation permits. OPSEC requirements maydictate adoption of the following COMSECprocedures and considerations during therehearsal.a. Maximum use of secure voiceequipment.b. Use of minimum power on electronicemitters.c. Assignment of call signs and frequenciesfor rehearsal use only.d. Rehearsal scheduled to minimize enemysatellite surveillance.6. C4 Systems Support Duringthe Movement PhaseThe use of equipment, particularlytransmitters and emitters, may be severelyrestricted to prevent disclosure of locations,movements, and intentions of the force. TheCATF normally prescribes conditions ofEMCON in effect during the movementphase. The C4 systems support plan mustreflect restrictions applicable to radio circuitsand provide for handling important messageswithin imposed limitations.7. C4 Systems Support DuringAdvance Force Operationsa. Before advance force operations begin,plans must be made for communicationsamong elements of the advance force,supporting forces, and the main amphibiousforce. Special consideration must be given topassing intelligence between the advanceforce and the main body of the amphibiousforce.b. Pre-H-hour traffic will be minimized toavoid revealing the intention to conduct anamphibious operation and to keep circuitsclear for high precedence traffic.8. C4 Systems Support Duringthe Action PhasePrimary reliance must be placed on singleand multi-channel radio communications.Communications plans must providesufficient channels of communications duringship-to-shore movement to facilitate controland coordination at all echelons.Communications plans must also provide forthe rapid development of communications andinformation systems ashore.9. Responsibilitiesa. CATF and CLF are responsible for C4systems support planning, with the designatedcommander consolidating the requirements.CATF responsibilities normally include thefollowing.• Preparation and promulgation of acoordinated plan for employment ofamphibious force communicationsduring the operation.VI-3