The king-men seemed to have been concentrated in a particular area (Moroni's army "did march forth against them"--Alma 51:18). Additionally, the king-men were compelled to show the title of liberty "upon their towers, and in their cities" (Alma 51:20). Moroni's army was perhaps located in between the king-men and the advancing Lamanites, otherwise, some of the king-men might have chosen to flee and join the Lamanites (or perhaps some already had done so). [Alan C. Miner, Personal Notes]