This is an understatement: Battlefields are unsafe. For troops wounded in combat, they need to get out of battle fast and to medical care. Historically that's been the role of human medics, who bravely risk enemy fire to save their wounded comrades. That's profoundly dangerous work, undertaken by humans because we haven't, historically, had any other options. Earlier this week, Major General Steve Jones, commander of the Army Medical Department Center, said that in the future, we might send robots instead. Jones said:

"We have lost medics throughout the years because they have the courage to go forward and rescue their comrades under fire. With the newer technology, with the robotic vehicles we are using even today to examine and to detonate IEDs [improvised explosive devices], those same vehicles can go forward and retrieve casualties."