Alma 48:1 - 48:5
Alma 48: 1 And now it came to pass that, as soon as Amalickiah had obtained the kingdom he began to inspire the hearts of the Lamanites against the people of Nephi; yea, he did appoint men to speak unto the Lamanites from their towers, against the Nephites.
Now that Amalickiah was king of the Lamanites, he began to make plans for conquering the Nephites. He started with a propaganda campaign to rile up the Lamanites against the Nephites. He had fellow henchmen speaking to the people from towers against the Nephites.
Alma 48: 2 And thus he did inspire their hearts against the Nephites, insomuch that in the latter end of the nineteenth year of the reign of the judges, he having accomplished his designs thus far, yea, having been made king over the Lamanites, he sought also to reign over all the land, yea, and all the people who were in the land, the Nephites as well as the Lamanites.
By the end of the 19th year of the reign of the judges, Amalickiah was now king of the Lamanites and was working on his next objective of becoming king of the Nephites
Alma 48: 3 Therefore he had accomplished his design, for he had hardened the hearts of the Lamanites and blinded their minds, and stirred them up to anger, insomuch that he had gathered together a numerous host to go to battle against the Nephites.
He had also got the Lamanites all riled up against the Nephites enough that they were preparing to go to war once again against the Nephites. His army was now vast in size and were ready to begin their onslaught.
Alma 48: 4 For he was determined, because of the greatness of the number of his people, to overpower the Nephites and to bring them into bondage.
Amalickiah’s plan for conquering the Nephites was simple; overpower them with overwhelming force on account of they vastly outnumber the Nephites.
Alma 48: 5 And thus he did appoint chief captains of the Zoramites, they being the most acquainted with the strength of the Nephites, and their places of resort, and the weakest parts of their cities; therefore he appointed them to be chief captains over his armies.
For his commanders, Amalickiah chose the Zoramites. They were the recent decenters from the Nephites and they knew the condition of the Nephite army and the weakness of the various cities and their defenses.