Mark 15

 Mark tells us - 

"...so Pilate, willing to content the people, released Barabbas unto them, and delivered Jesus, when he had scourged him, to be crucified.

16 And the soldiers led him away into the hall, called Prætorium; and they call together the whole band."  (Mark 15:15–16)

Elder McConkie informs us that the "whole band" included - 

"...about six hundred Roman soldiers with a leader over them..."  (McConkie, Doctrinal New Testament Commentary, Vol. 1, p. 781)