command post vs general headquarters

command post and general headquarters both are nouns.

Word	Noun	Adjective	Verb	Adverb
command post	Yes	No	No	No
general headquarters	Yes	No	No	No

As nouns, command post and general headquarters are synonyms defined as:

command post and general headquarters: military headquarters from which a military commander controls and organizes the forces

Other synonyms of command post include GHQ.

command post (noun)	general headquarters (noun)
military headquarters from which a military commander controls and organizes the forces	military headquarters from which a military commander controls and organizes the forces