Army member is firing all guns together (5)
I believe the answer is:
salvo
'army' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for salvo that I've seen before include "Unusual excuse" , "Burst of firing" , "Burst of artillery shots" , "reservation" , "Aussie evangelist" .)