Soldiers welcome band signing up again (8)

I believe the answer is:

rehiring

'signing up again' is the definition.
(to sign someone up can mean to hire them)

'soldiers welcome band' is the wordplay.
'soldiers' becomes 're' (Royal Engineers).
'welcome' becomes 'hi' (both are greetings).
'band' becomes 'ring' (a ring is a band of metal).
're'+'hi'+'ring'='REHIRING'

(Another definition for rehiring that I've seen is " what idle cabbie wants".)

I've seen this clue in The Guardian.

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