A law requiring that fighting-age men and boys register with the authorities before taking long trips abroad caused uproar over the weekend. https://www.politico.eu/article/germany-looks-to-backpedal-on-controversial-military-registration-law
Ideally, in a totalitarian type world, something like contact-tracing could be used for almost any reason besides a pandemic.
https://www.who.int/news-room/questions-and-answers/item/coronavirus-disease-covid-19-contact-tracing People already have been trained or conditioned for such a situation.
https://coronavirus.jhu.edu/contact-tracing Restricting or controlling the movements of people who are anti-war would be desirable by warmongers and control freaks in general.
https://www.nature.com/articles/s41467-020-20325-7 Controlfreaks and warmongers want people to die for their SYSTEM.
https://en.wikipedia.org/wiki/Contact_tracing
https://en.wikipedia.org/wiki/Digital_contact_tracing
A fascist or totalitarian SYSTEM isn't the type of world that most people would want.
https://en.wikipedia.org/wiki/Contact_tracing#Ethical_and_legal_issues
Thus, the control freaks would have to force it upon the people.
