Question

why does cassius ask one of his men to kill him

Answer 1

You should be more specific next time so you can get a faster answer. c:
And since this is about Julius Ceasar I think you would have a better chance in the "Literature" section or maybe even in the "English" section. :)

Anyways, I think Cassius asks one of his men to kill him because he feels guilty because his best friend has been captured.

This might help with more questions on Julius Ceasar: http://quizlet.com/1368241/julius-caesar-flash-cards/