Almost 90 US B-29 bombers dropped about 6,000 tons of napalm on Kumagaya, Japan, on the night of August 14-15, 1945. Eighty years later, the scars of that American firebombing remain.

July 16 is the 80th anniversary of the world’s first atomic bomb test. At 5:30 a.m. on that date in 1945, 12 young girls ...