Soldiers who heard John the Baptist's ripping preaching asked what they should do to show repentance. The Baptist replied, "Do not extort money from anyone by threats or by false accusation, and be content with your wages."
Be content with your wages.
There are a thousand differences between being a Roman soldier in early first century Judea and being an American soldier in twenty-first century Colorado Springs, but this is not one of them. Discontentment is the perennial temptation of every soldier. If you have ever been around a soldiers' gripe session, you know what I mean. But a mark of those who trust in Christ is contentment.
"Keep your life free from love of money, and be content with what you have, for he has said, 'I will never leave you nor forsake you.'" (Heb 13:5)
Being filled with all the fulness of Christ leaves little room for discontent.