Germany apologizes for bombing Switzerland last week. The pilots thought they were over France.
American military technology is proving rather disappointing in Mexico. Wireless equipment has failed, so the two camps of soldiers can only communicate by airplane courier, but the planes’ engines are too weak to be trusted in mountainous regions or indeed to reach altitudes above the range of rifle fire. On a more mundane level, all the marching means the soldiers’ shoes are falling apart.
They’ve also only just realized that they can’t keep captured Mexicans as prisoners of war because there’s no officially declared war, and they can’t take them back over the border into the US either.