Crossword Genius

Secure promotion in C branch (5)

Ross

I believe the answer is:

climb

'secure promotion' is the definition.
(as in climbing the ranks)

'c branch' is the wordplay.
'branch' becomes 'limb' (I've seen this before).
'c'+'limb'='CLIMB'

'in' acts as a link.

(Other definitions for climb that I've seen before include "Go higher up" , "Get higher" , "Rise to a higher level" , "Go up - scale" , "Scale or clamber" .)

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