Be a spokesman for the engineers here
I believe the answer is:
represent
'be a spokesman' is the definition.
'represent' can be an answer for 'be' (I know that represent is a type of be). I'm not sure about the 'a spokesman' bit.
'engineers here' is the wordplay.
'engineers' becomes 're' (Royal Engineers).
'here' becomes 'present' (similar in meaning).
're'+'present'='REPRESENT'
'for the' acts as a link.
Can you help me to learn more?
(Other definitions for represent that I've seen before include "show" , "Act for" , "Play the part" , "Ambassadors do it" , "Explain" .)