World War II marked by 50 to 85 million fatalities, most of whom were civilians in the Soviet Union and China. It included massacres, the genocide of the Holocaust, strategic bombing, premeditated death from starvation and disease, and the only use of nuclear weapons in war. Japan, which aimed to dominate Asia and the Pacific, was at war with China by 1937, though neither side had declared war on the other. World War II is generally said to have begun on 1 September 1939, with the invasion of Poland by Germany and subsequent declarations on Germany by France and the United Kingdom. From
Scuba diving fatalities system by most, if not all diver certification organisations, only 14% of divers who died still had their buddy with them at the time. In a Hawaiian study 19% of the fatalities died with their buddy present. In the ANZ study 33% of the fatalities either dived alone or voluntarily separated from their buddies before the incident, 25% separated after a problem developed and 20% were separated by the problem. In the DAN study, 57% of those who started diving with a buddy were separated at the time of death. A common cause of separation was one diver running low