
King David was in the army and led his forces into battle. Although Solomon's reign was peaceful, he further expanded the army, adding chariots and horsemen (1 Kings 10:26).
Many Centurions mentioned in the New Testament are praised as Christians, God-fearers, and men of good character (Matthew 8:5-13, 27:54, Acts 10:1-2, 22). The titles and places may have changed, but the armed forces should be favourably valued as the Centurions in the NT.
[Answered by Pastor Quang Nguyen]