Soldiers worried Sherpa died, in other words (9)
I believe the answer is:
rephrased
'in other words' is the definition.
(I've seen this before)
'soldiers worried sherpa died' is the wordplay.
'soldiers' becomes 'RE' (Royal Engineers).
'worried' indicates anagramming the letters.
'died' becomes 'd' (abbreviation next to the year of someone's death).
'sherpa' anagrammed gives 'phrase'.
're'+'phrase'+'d'='REPHRASED'
(Other definitions for rephrased that I've seen before include "freshly set down" , "in other words" .)