According to Daniel Ludlow, the Book of Mormon is not absolutely clear on how long the battle at Cumorah lasted. It states that the battle of Cumorah started when "three hundred and eighty and four years had passed away," that is, A.D. 385. (Mormon 6:5). After the battle was completed and the Lamanites had killed most of the Nephites, Mormon took the Nephite survivors with him and they "did behold on the morrow, when the Lamanites had returned unto their camps," the terrible scene of destruction (Mormon 6:11, 15). This could mean "on the morrow" after the battle was completed, regardless of how long the battle lasted. [Daniel H. Ludlow, A Companion to Your Study of the Book of Mormon, p. 173]