Sign given by head of militia abandoning tanks (8)
I believe the answer is:
aquarius
'sign' is the definition.
(I know that Aquarius is a sign)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for aquarius that I've seen before include "The Water Bearer" , "Sign of the zodiac, the water-bearer" , "A 23 ac" , "Sign of the water-carriers" , "Eleventh sign of the Zodiac" .)