There were many reasons for Hitler to not attack
Switzerland, as the country did not have any natural resources which could have
attracted Hitler. Another simple reason is that Hitler never felt the need to
invade Switzerland as the whole point of attack could be to utilize the train
lines, supply lines and other facilities to ease up the transportation of
German army with which Switzerland never messed even during the war, German
armies were passing through Switzerland freely, the famous stories are common about
sealed rail cars passing through Italy to Germany. Switzerland played an almost
neutral role during war which could also be a reason for their safe grounds.
Though
Hitler had a plan to attack Switzerland called “Operation Tannenbaum”, which
was cancelled later.
Both for economic opportunity and to start cattle ranches (mainly economic opportunity though, as they didn't really discover cattle herding until seeing it done by the western Indian tribes
The statement that is true in the Pacific theater during World War II is that the Navajo Indians in the U.S. Marine Corps developed an unbreakable code using their native language.