Taking a cue from the first war experience in Ukraine conflict with HAV (Human Acellular Vessel) technology for vascular repair, a historical review of modern war vascular lesions repair is accomplished; it reports a progressive improvement on (lower) limbs salvation from vascular injuries amputation that was 50 % in World War II reduced to 13% in Korea and Vietnam wars. The tragedy of wars worsens, if possible, at every new step; if a contradictory positive point exists, it may be found in military medicine improvements; in this case, vascular surgery experiences enhance civil surgery by suggesting new solutions. The availability of a novel biologic conduit for bypass and repair like the HAV, if confirmed by further studies, could entry in the list of limb salvage tool in extreme conditions.