Turn of old French actor performing after end of war (8)
I believe the answer is:
Here is my best explanation:
'turn' is the definition.
(rotation is a kind of turn)
'old french actor performing after end of war' is the subsidiary indication.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'french actor' becomes 'tati' (Jacques Tati).
'performing' becomes 'on' (I've seen this in other clues).
'after' means one lot of letters go next to another.
'end of' says to take the final letters.
The last letter of 'war' is 'r'.
'otation' put after 'r' is 'rotation'.
'of' is the link.
(Other definitions for rotation that I've seen before include "Revolution", "Going round", "Turning movement around an axis", "act", "Revolutionary movement", "Action of turning", "process", "Spinning motion or cyclic changes as of crops", "Act of turning" and "Out of control".)