Volunteers leading Royal Marines and Air Corps? This is on the way (6)
I believe the answer is:
tarmac
'way' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'volunteers leading royal marines and air corps? this is on' is the wordplay.
'volunteers' becomes 'TA' (abbreviation for Territorial Army).
'leading' says to take the initial letters.
'and' is a charade indicator (letters next to each other).
'air corps?' becomes 'AC' (military abbreviation).
'this is on' is a charade indicator (letters next to each other).
The initial letters of 'royal marines' is 'rm'.
'ta'+'rm'+'ac'='TARMAC'
'the' acts as a link.
Can you help me to learn more?
(Other definitions for tarmac that I've seen before include "Airport runway(s)" , "Road-surfacing substance" , "Trade name for road surfacing material" , "Surfaced area for plane to land" , "Surface material of tar and broken stone" .)