The term "tactical" could be used to describe any knife really, but for me it describes knives that are designed to be used as survival tools. This category could arguably be divided into two sub groups - outdoor survival and urban survival. Outdoor knives are typically built to be used as tools for cutting and chopping while braving the wilderness. Urban knives, on the other hand, are weapons geared towards personal defense, giving you an edge to survive in the concrete jungle. Some military combat style knives allow you to do both.