1921 Swiss referendums

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Four referendums were held in Switzerland during 1921.^[1] The first two were held on 30 January on holding referendums on treaties that would be valid for at least 15 years and on abolishing the military judiciary.^[1] The treaty proposal was approved, whilst the abolishment of the military judiciary was rejected.^[1] The third and fourth were held on 22 May on add articles 37bis and 37ter on road traffic and aviation to the constitution, and on only adding article 37ter on aviation.^[1] Both were approved.^[1]