Very light infantry at the front during fighting should get send-off (11)
I believe the answer is:
valediction
'send-off' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'very light infantry at the front during fighting' is the wordplay.
'very' becomes 'v' (abbreviation).
'light' becomes 'led' (light-emitting diode).
'at the front' indicates taking the first letters.
'during' is an insertion indicator.
'fighting' becomes 'action' (action can mean action in war).
The initial letter of 'infantry' is 'i'.
'led'+'i'='ledi'
'ledi' inserted inside 'action' is 'alediction'.
'v'+'alediction'='VALEDICTION'
'should get' acts as a link.
Can you help me to learn more?
(Another definition for valediction that I've seen is " Farewell".)