That is sulfanilamide powder, World War II U.S. Army first aid kit will be put in the first aid code requires injuries need to be sprinkled in the wound sulfanilamide powder, in order to fight infection, but the actual situation due to the blood flow is too large (especially abdominal and neck shots such as this can not be tightened blood vessels), a lot of powder sprinkled up on the wash away, against the large blood vessels do not involve traumatic injuries are still more useful. The most common movie is: a soldier was hit by a bullet, like a flour bag down, and then the comrades ran over, screaming Medic, and then the god like the undefeatable Medic will fall from the sky, look at the gasping for breath, take out the portable morphine, tear open the package and a needle down, and then look at the need to stop the bleeding, sprinkle sulfa powder, crackle and pop paste gauze. When he's done, he's dragged behind the lines a bit, and in the process of treatment and dragging, the wounded soldier can be hit again in the head, torso, or anywhere else that will make him go to pot, or will make Medic go to pot along with him. If he does, a godlike chaplain will come down from the sky to say the last mass. If you're lucky enough to be dragged to safety, a communications officer will call for a jeep to take the wounded soldiers who didn't make it to the field hospital.
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