Back home, give orders to deputy (6-2-7)
I believe the answer is:
second-in-command
'deputy' is the definition.
(I know that second-in-command is a type of deputy)
'back home give orders' is the wordplay.
'back' becomes 'second' (both can mean to support an idea or proposal).
'home' becomes 'in' ('he's home' can mean 'he's in').
'give orders' becomes 'command' (to command someone is to give them orders).
'second'+'in'+'command'='SECOND-IN-COMMAND'
'to' is the link.
(Other definitions for second-in-command that I've seen before include "Officer immediately below chief officer" , "Deputy" .)