A Dictionary of the Book of Mormon/Cumeni
CUMENI. A Nephite city in the southwest of their possessions, or near the Pacific coast. When first mentioned it was in the possession of the Lamanites (B. C. 66). In B. C. 63, the Nephites under Helaman lay siege to it, captured the trains of provisions sent to its relief, and eventually compelled it to capitulate. A desperate but ineffectual attempt was soon after made by the Lamanites to recapture it, in which both sides suffered much loss. This victory of the Nephites was largely due to the intrepid valor of the 2,000 young Ammonites under the command of Helaman. Cumeni is only mentioned in connection with this war.