Army. the headquarters of the commander of a military unit.
a headquarters of a civilian group or organization dealing with an emergency situation, special event, or the like.
Origin of command post
An Americanism dating back to 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
military the position from which a unit commander and his staff exercise command
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012