Alma 62:15

And it came to pass that as they were marching towards the land, they took a large body of men of the Lamanites, and slew many of them, and took their provisions, and their weapons of war.

As they were marching toward the land, they found a large group of Lamanites. They killed many of them. They took their food and their weapons.

As they marched, they intercepted a large Lamanite force, killed many of them, and seized their supplies and weapons.