For something so central to our lives, the role of blood wasn't something we could explain for much of our history. We knew it was important, and when someone was bleeding out on the battlefield, you needed to fix them, but just how you would go about doing that was a source of constant trial and error. In the second Loose Rounds discussion, Adin and Angry Staff Officer look at how blood transfusions came into being on the battlefield and how it changed how wars were fought. War Stories Loose Rounds