Sounds like military escort (7)
I believe the answer is:
marshal
'escort' is the definition.
(thesaurus)
'sounds like military' is the wordplay.
'sounds like' indicates a 'sounds like' (homophone) clue.
'military' becomes 'martial' ('martial' can be similar in meaning to 'military').
'martial' is a homophone of 'MARSHAL'.
(Other definitions for marshal that I've seen before include "first officer" , "High officer" , "Shepherd" , "Bring together in order" , "Assemble and arrange" .)