Weapons used from WWII were used for The Korean War. In addition, to the old weapons and strategies, there were new things such as aerial combat. However, Nuclear weapons were reintroduced by Harry S. Truman. Truman had plans to use the nuclear weapons and the new aerial combat techniques to attack North Korea.
This pictures shows of a B 29 atomic bomb. These bombs were used in Hiroshima and Nagasaki. It wiped out the cities completely and resulted in many fatalities. What if these bombs were used one more time? Harry S. Truman had to decide whether to use the bombs or any other nuclear weapon against North Korea. Originally, the bomb was supposed to be dropped on the 38th parallel. However, disaster was averted when the bombs were never dropped thanks to Truman's decision after fighting with MacArthur.