Better Over than Under

I like how Alma took care of the invading Lamanite army. He didn't use any half measures:

 20 Now it came to pass that not many days after the battle which was fought in the land of Zarahemla, by the Lamanites and the Amlicites, that there was another army of the Lamanites came in upon the people of Nephi, in the same place where the first army met the Amlicites.

 21 And it came to pass that there was an army sent to drive them out of their land.

 22 Now Alma himself being afflicted with a wound did not go up to battle at this time against the Lamanites;

 23 But he sent up a numerous army against them; and they went up and slew many of the Lamanites, and drove the remainder of them out of the borders of their land (Alma 3).

 

I think it is good practice to send plenty of resources to get a job done. Many hands make light work. A previous Nephite king, Noah, had a different mentality. When faced with an invading Lamanite army, he sent only a small contingent of men, who were summarily wiped out, and then king Noah found himself on the ropes.