basic, simple

carry out, obey
disobey, ignore
bark, give, issue, shout
an army officer barking commands at his men
He issued the command to retreat.

at sb's command
I am at your command (= ready to obey you).
At her command all work stopped.

your wish is my command (= I will do whatever you want me to do) (used esp. in stories)

spoken, verbal, voice
keyboard
basic, simple

enter, type
use
send
execute, run
receive

line, prompt

complete, full, total
He was in complete command of the situation.

direct
under the direct command of Lieutenant Sykes

overall, personal, sole
She was in sole command of one million pounds.

integrated, joint, unified
NATO's integrated military command

central, high, supreme
the military high command

air, army, military, naval
battle, combat

have
He had command of 3 000 soldiers.

assume, take, take over
gain, get
give sb, put sb in
maintain
be relieved of, lose, relinquish
She has lost command of her senses.

centre/center
chair, deck, module, post, ship
structure

in command
Who is in command?
She is second in command.

in command of
He was put in command of the navy.

under sb's command
The division was under the command of General George.

command over
his command over resources

the chain of command, the line of command

excellent, fluent, good, impressive, perfect
poor

have
demonstrate, show
improve

at your command
The vast knowledge he has at his command will be invaluable in the job.

command of
She has an excellent command of French.