What the four major combat styles reveal about survival in brutal ecosystems

Streamers and pop culture on Instagram: "The term “friendly fire” comes from the military and refers to accidentally harming your own side during combat. Shockingly, historians estimate that in modern warfare, 2–20% of casualties have been caused by friendly fire, mostly due to confusion, poor visibility, or split-second decisions under stress. That’s why armies invest heavily in identification tech, training, and communication systems. On the internet, though, “friendly fire” evolved into a mem