Alma 54:2

And it came to pass that Moroni felt to rejoice exceedingly at this request, for he desired the provisions which was imparted for the support of the Lamanite prisoners, for the support of his own people; and he also desired his own people for the strengthening of his army.—

Moroni was very happy about this request. He wanted the food that was being used for the Lamanite prisoners. He needed it for his own people. He also wanted to get his own people back to make his army stronger.

Moroni was thrilled. He wanted to free up the food being used to feed Lamanite prisoners so his own people could eat. He also needed to get his own soldiers back to strengthen his army.