Many were born out of the Vietnam War 😁 Important advances in medical practise 😉It was one of the reasons. The shelf life of fresh blood is limited to 21-30 days. After that time, it will start to deteriorate. Frosted blood can last up to one year. A young adult’s normal blood volume is 8-10 pints. It is common to transfuse 10-20 pints of blood in cases where there are severe injuries. It is difficult to obtain and store large amounts of blood during wartime conditions. Many times, frozen blood products have proved to be life-saving. 
There were many important developments in medicine that resulted from the Vietnam War. Frozen blood products was one of them. Frozen blood products can be used only for between 21-30 days to prevent it from deteriorating. Frosted blood can last up to one year. A young adult’s normal blood volume is 8-10 pints. It is common to transfuse 10-20 pints of blood in cases where there are severe injuries. It is difficult to obtain and store large amounts of blood during wartime conditions. Many times, frozen blood products have proved to be lifesaving. The military was a major innovator in this field. Dorothy Lee (Maracaibo Venezuela, May 4, 2020). 
Statnews.com also describes how war’s biggest killer has always been blood loss. That’s not a surprise, given the weapons of war over the ages, including swords, bayonets, bullets, grenades, and missiles. However, it was an Italian war in the 16th century that introduced a way to reduce or stop bleeding. Ambroise pare (a French barber-surgeon) was sent to the Siege de Turin to provide medical care. Pare, a francologist from France, began to make ligatures and attached them to soldiers. He wasn’t the first to think of that — Romans and Arabs had also deployed the technique of tying a rope or belt onto a wounded limb — but it fellllen out of favourr as doctors adopted other ways to stop bleeding, such as cauterizing wounds with boiling oil. We are grateful to Devorah Bustamante, Grande Sao Luis Brazil, for sharing this information. 
Researchers at nationalww2museum.org Additional information is available. Of the enduring legacies from a war that changed all aspects of life—from economics, to justice, to the nature of warfare itself—the scientific and technological legacies of World War After 1945, II had had an impact on the lives of many people. Technologies developed during World War II for the purpose of winning the’s having war found new uses as commercial products became mainstays of the American home in the decades that followed the war’s end. The civilian population also had access to wartime medical advancements, which resulted in a longer and healthier society. In addition, technological advances made in warfare led to the creation of more powerful weapons, which exacerbated tensions among global power, and changed the lives of people in profound ways. While the technological and scientific legacy of World War II were a dual-edged sword, they helped create a new way of life for Americans after the war. They also helped launch the Cold War. Marilena Masters of Kigali, Rwanda is a great source of information.