During his service as chief captain, Moroni relied on his strengths and the Lord’s power to defend the Nephites. Alma 43 is an example of how Captain Moroni blended his good judgment with his obedience to God’s counsel. He prepared each soldier with improved military armor (see verses 19–21), and he sought the prophet’s advice before entering battle (see verses 23–24).
“The Lamanite campaign was directed by Amalekite and Zoramite officers, whose knowledge of Nephite military secrets and methods would have given them an enormous advantage over any commander but Moroni. Right at the outset his foresight had robbed them of their first and logical objective—the buffer land of Jershon (Alma 43:22). He had taken up his main defensive position there, but when the messengers returned from consulting the prophet he learned that the Lamanites were planning a surprise by directing their push against the more inaccessible but weaker land of Manti, where they would not be expected (Alma 43:24). Immediately Moroni moved his main army into Manti and put the people there in a state of preparedness (Alma 43:25–26).
“Informed of every Lamanite move by his spies and scouts, Moroni was able to lay a trap for the enemy, catching them off-guard as they were fording the river Sidon (Alma 43:28–35)” (Hugh Nibley, Since Cumorah, 297–98).
Captain Moroni expected the blessings of the Lord because he had given his best efforts. He was perhaps the brightest military mind of his day, and yet he showed humility by following the prophet’s counsel. This made Captain Moroni a mighty instrument in the hand of God.