> The US mainland remained untouched throughout both world wars.
Minus some balloons from the Japanese I believe?
And the 8 Germans who landed at east Long Island, NY and Jacksonville, FL. https://en.m.wikipedia.org/wiki/Operation_Pastorius
And the 8 Germans who landed at east Long Island, NY and Jacksonville, FL. https://en.m.wikipedia.org/wiki/Operation_Pastorius