Marshal Tito's quit (4)
I believe the answer is:
halt
'quit' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for halt that I've seen before include "game" , "Pull up" , "Small railway station" , "Stop or pause" , "Bring to a stop; lame" .)