Position identification failure leads to death

Drone footage released by Ukrainian sources captures a lost Russian Soldier approaching Ukrainian defensive positions thinking that they are his own. It appears as if the Ukrainian positions also weren't sure if the man was friend or foe, and they let him get into shouting distance before ending his life. What you're looking at in this video is a pretty classic IFF failure on both sides. For the uninitiated, IFF is the acronym for Identification: Friend or Foe. Generally speaking, most professional militaries have IFF systems like Near/Far recognition that are designed to prevent fratricide, and to keep enemy forces outside of friendly lines. In this instance, the confused Russian walked right up on Ukrainian positions, believing that they might be his own defensive lines. This probably took the Ukrainian off-guard, who were likely shouting some kind of challenge/pass system towards the Russian before they ultimately took his life with small arms fire.