"Lightning war” (10)

I believe the answer is:
blitzkrieg
'lightning war' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for blitzkrieg that I've seen before include "Lightning war" , "Intense campaign" , "Sudden overpowering military attack" , "Sudden all-out offensive, aiming for quick victory" , "Sudden overwhelming attack" .)