25. A Lucky Career Track Switch

Alexander Fleming initially wanted to become a surgeon. However, while serving in a reserve regiment, he was recognized as a great marksman. To become a surgeon, he would have had to leave his medical school and move away – which would have meant leaving his unit. His commanding officer did not want to lose the promising reservist. So he introduced Fleming to a prominent researcher and immunologist, who convinced him to become a researcher instead.
During WWI, Fleming served in the Army Medical Corp, where he observed the deaths of many soldiers from uncontrollable infections. Antiseptics were used to fight infections, but they often did more harm than good. Fleming conducted research, which showed that using antiseptics was a mistake when it came to serious injuries: they did nothing to stop the proliferation of anaerobic bacteria in deep wounds. His research was initially rejected, but Fleming plugged on.



