Answer: Germany was stepping up its efforts to stop goods from reaching the Allies.
Explanation:
After the Lusitania incident in 1915, Germany had pledged to stop unrestricted submarine warfare. They made that pledge to keep the USA from entering the war st that time. But by 1917 Germany went on the offense with submarines again, hoping to end the war and win. However, this was one of the factors that pulled the USA into the war, and Germany lost.
Well, as it being one of the deadliest events in american history, the town was similar to that of the aftermath of a Hydrogen bomb going off, no human remains, just the sight of pure and utter destruction.
So they would not be tempted to sin