Having had the experience of discovering Hitler's plans for Op Tannenbaum and then making preparations to counter it, the Swiss forces maintained their guard up throughout the Cold War.
I was present when, in 1982, a former colleague at IDR (originally a Geneva-based publication ) was taken to task by the head of Swiss Security, who told him he 'was in serious trouble' over an article the colleague had written on Swiss defensive war plans.
Since we were both, at the time, on the standard five-year, not automatically renewable , work and residence permits, this didn't sound as if it boded well .
'What's the problem,' said the colleague. 'As requested, I submitted the article, pre-publication , for security clearance, and deleted things you asked me to cut out.'
'True,' said the Swiss, 'but there were things in there that were so secret we couldn't ask you to delete them, because , then, you would have known they were secret.'
Two lessons immediately spring to mind from that exchange:
1) Never let it be said the Swiss (and in this case he was from the German-speaking part) don't have a sense of humour, and:
2) The Great Game goes on.