Crazy commander’s personal assistant disrupting plan (6)
I believe the answer is:
madcap
'crazy' is the definition.
(I've seen this before)
'assistant disrupting plan' is the wordplay.
'assistant' becomes 'adc' (I am not sure about this - if you are sure you should believe this answer much more).
'disrupting' indicates putting letters inside (inside letters 'disrupt' the flow of outside one).
'plan' becomes 'map' (plan can mean a map of something).
'adc' placed inside 'map' is 'MADCAP'.
'commander's personal' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for madcap that I've seen before include "Silly" , "Given to reckless behaviour" , "Impetuous irresponsible person" , "Hothead" , "Foolhardy" .)