Excellent reference TBK.
Here's the reference in Luke 3: 14-
And some soldiers were questioning him, saying, “And what about us, what shall we do?” And he said to them, “Do not take money from anyone by force, or accuse anyone falsely, and be content with your wages.”
Jesus basically said for them to be lawful, do their job and be don't stealing anybody's stuff. Compare this with the reaction a soldier would get if he attended a KH service in his uniform and asked what he needed to do to join their group.
A couple hundred years later an entire legion of Roman Soldiers happened to be Christian because they were recruited in an area around Thebes where there were many Christians. They were good soldiers doing their job, helping to keep law and order in the empire, content with their wages. They are remembered as the Theban Legion Martyrs.
They alone had the gall to stand up to Caesar when he was hunting Christians:
"You order us to seek out Christians for punishment. You do not now have to seek out others on this charge since you have us here confessing: We believe in God the Father maker of all and God his Son Jesus Christ…." (AD 286)
Maximillian ordered them decimated again and again until none were left.
This is also an excellent reference to the early deity of Christ belief.