Alma 49:2

And behold, the city had been re-built, and Moroni had stationed an army by the borders of the city, and they had cast up dirt round about, to shield them from the arrows and the stones of the Lamanites; for behold, they fought with stones, and with arrows.

The city had been rebuilt. Moroni had placed an army by the borders of the city. They had piled up dirt all around to protect them from the Lamanites’ arrows and stones. The Lamanites fought with stones and arrows.

The city had been rebuilt. Moroni stationed an army along the borders and had them pile up earthen walls to shield them from Lamanite arrows and stones—that’s what they fought with back then.