The neutral country has begun to reverse deep post war defence cuts and incursions by Russian planes and submarines have sparked intense public debate over whether to join Nato.
In September 2017, the country held its biggest military exercise in 23 years, with war games involving 19,000 Swedish personnel and allies from Finland, Denmark, Estonia, Latvia, Lithuania, France, Norway and America.
The country last year voted to reintroduce conscription.
"All of society needs to be prepared for conflict, not just the military. We haven't been using words such as total defence or high alert for 25-30 years or more. So the knowledge among citizens is very low," said Christina Andersson, leader of the project at the Swedish civil contingencies agency.