Uniform carried by entire travelling entourage (7)
I believe the answer is:
retinue
'entourage' is the definition.
(I know that entourage can be written as retinue)
'uniform carried by entire travelling' is the wordplay.
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'carried by' is an insertion indicator.
'travelling' indicates an anagram.
'entire' anagrammed gives 'retine'.
'u' inserted inside 'retine' is 'RETINUE'.
(Other definitions for retinue that I've seen before include "Reunite (anag) - group of servants" , "Personal staff" , "Suite - train" , "Body of followers" , "Train, escort" .)