Answer:
Soldiers trained rigorously before the D-Day invasion. This was a one shot opportunity that would be extremely hard to duplicate. They had to be on point, prepared and ready to do whatever it takes. Training increases your chances of surviving and completing your assignment as best as possible. So in order to be in their best shape, they trained for months to prepare for that invasion.
Towards the end of World War II, Raphael Lemkin, a lawyer of Polish-Jewish descent, aggressively pursued within the halls of the United Nations and the United States government the recognition of genocide as a crime. Largely due to his efforts and the support of his lobby, the United Nations was propelled into action. In response to Lemkin's arguments, the United Nations adopted the term in 1948 when it passed the "Prevention and Punishment of the Crime of Genocide".
The answer is in the 'necessary and proper clause' of the U.S.<span> Constitution, better known as the '</span>elastic clause<span>,' which allows Congress to </span>make<span> laws it needs to carry out its own powers.</span>
Brass knuckles and deer horn knives hope this helps a little bit! :D