It's a misconception to imagine that in a Switzerland surrounded by warring countries with borders sealed and army mobilised that "life went on almost normally". There was rationing here too in WW2.

Korea, Falklands, Iraq (and Kuwait which you missed) life did go on. Though through operation Desert Storm there was a three month period when the Swiss worried more than usual and didn't go out to dine and enjoy themselves as much.

To answer your question, I cannot recall an example where intervention helped much, but then what would the standard of life been without intervention?