Throughout the history of modern warfare, countless wounded fighters have been saved from bleeding to death by tourniquets—the straps or ties that wrap around a damaged limb and staunch hemorrhaging.

But what if a soldier is shot through the pelvis, or in the armpit, where a tourniquet would be of no use?

Militaries the world over have grappled with the question for decades, and the issue took on new urgency during the US-led wars in Iraq and Afghanistan.

Now the US Army has found an answer.

The service currently is training and equipping its combat medics with a new device, called a junctional tourniquet.