Switzerland has not been in a war of any kind since 1815. It has not been in an official foreign war since 1515. This would be astounding, even miraculous, for any nation. But Switzerland borders Germany . And France . And Italy . And Austria . And Liechtenstein . Now the Prince of Liechtenstein has rarely lashed out in Blitzkrieg in a desperate bid to reign uber alles, but ALL of Switzerland 's other neighbors have devoted a lot of effort to invading other countries.
The features of the Swiss system for keeping the peace are simple. They mind their own business, and they have very strict gun control. By which they mean that every Swiss male must have a gun, except for those who have to carry a mortar or missile launcher. Females are not subject to universal military training, but if you go to a Swiss rifle range, there are always girls blasting away too. After 9-11, the Swiss told passengers to carry their bayonets onto their airliners . . . somewhat different from the US response of panicked victim-disarmament. (You are aware that 99% of US pilots are STILL disarmed?)
On civil defence and defending against biological, chemical, nuclear attack (all of which the U.S. population is wide open to due to the inattention of politicians to the good of ALL the americans
Switzerland has also provided for defense of the lives of its civilian population against nuclear terrorism. Realizing after World War Two that nuclear weapons in the hands of power-mad idiots posed a public health threat, the Swiss started a nationwide shelter-building program in 1960. By 1991, there was enough shelter space in Switzerland to protect everyone in their home or apartment, and also enough at their workplace and school. A Swiss citizen is generally never more than a few minutes from a fallout shelter with an air filter.
The entire Swiss shelter program was accomplished for somewhere on the order of $35 (1990 dollars) per year per capita. The US spends vastly more every year to achieve a military only capable of intervening in Third World nations that don’t have WMDs.
Switzerland does not send troops to intervene in other nations. Switzerland does not spend tens of billions of dollars yearly to fund dictators around the world, nor did Switzerland donate hundreds of billions of dollars to the Warsaw Pact through bank "loans." Switzerland does not send billions of dollars worth of weaponry every year to the warring tribes in the Middle East . Switzerland has no enemies. Yet the Swiss are armed to the teeth and dug into every hill and under every building.
US policy is the evil-parallel-universe inverse of the Swiss. The US intervenes everywhere, spies on everyone, supports every faction in every dispute. We have as many enemies as there are disputatious people in the world. Yet we spend more effort on disarming our own airline pilots and other law-abiding citizens than on providing shelters for our children against nuclear, chemical, or biological attack. We have an expensive conventional army, and quite a few aging offensive nuclear weapons. But no defense for our children.
The U.S. has been stuck defending against nuclear attack from the Soviets. They've they've given up on defending against except by promising total destruction to everyone and their neighbor (an inappropriate state to be in now that the Soviets aren't around anymore, the russians are friends, and anyone who wants to nuke the U.S. will be anonymous (or will be from the middle east, and the U.S. can't nuke that entire region since they need non-radioactive oil).
In contrast, the swiss have as perfect a defence as possible. It's a defence that was perfect two centuries ago, and, with upgrades of weapons, is still perfect. Of course, having the terrain help in the defence and digging into all those mountains helps a lot.