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Source:Sorenson:Seasonality of Warfare in the Book of Mormon and in Mesoamerica:war was normally carried on by the pre-Columbian inhabitants during a short annual period
John L. Sorenson: "war was normally carried on by the pre-Columbian inhabitants during a short annual period"
John L. Sorenson,
When we carefully examine the accounts of wars in the middle portion of the Nephite record, we find that military action did not take place at random throughout the calendar year but at particular times. Whatever realistic scene we assume for the Nephite lands, we would expect to find a similar seasonal pattern in that area's secular historical sources. I consider Mesoamerica (central and southern Mexico and northern Central America) to have been the scene of the Nephite conflicts, but whatever plausible location one chooses will lie in the tropics because, among other reasons, only in those areas are there feasible isthmuses located that could correspond to the "narrow neck of land" of the Nephites. Everywhere in those latitudes, war was normally carried on by the pre-Columbian inhabitants during a short annual period. This paper investigates the evidence for seasonality of warfare in the Book of Mormon account and compares it with what is currently known about the timing of warfare in Mesoamerica. —(Click here to continue) 
- John L. Sorenson, "Seasonality of Warfare in the Book of Mormon and in Mesoamerica," Warfare in the Book of Mormon