The enforced disarmament of Germany enshrined within the Treaty of Versailles was a cornerstone of the post-war order. It provided the essential foundation upon which all other calculations regarding security on the European continent were based. The problem was how to enforce it. Three inter-allied control commissions would have free access throughout German territory to monitor the implementation of the land, sea and air provisions, with all their costs to be borne by Germany. The land disarmament clauses provoked the most controversy and anxiety. Serious difficulties confronted the Allied inspectors on the Inter-Allied Military Control Commission (IMCC) trying to judge the good faith of a government, military and indeed people acting under duress. More significantly, British and French authorities came to different views on the purpose and focus of disarmament. These differences shaped the work of the IMCC, hindered the shared understandings necessary to develop a stable disarmament order, and limited the capacity of the League in the later 1920s to broaden disarmament agreements.