In October 1972, the first of what were to be a wave of strikes was led first by truckers, and later by small businessmen, some (mostly professional) unions and some student groups. Other than the inevitable damage to the economy, the chief effect of the 24-day strike was to induce Allende to bring the head of the army, general Carlos Prats, into the government as Interior Minister. Allende also instructed the government to begin requisitioning trucks to keep the nation from coming to a halt. Government supporters also helped to mobilize trucks and buses but violence served as a deterrent to full mobilization, even with police protection for the strike-breakers. Allende's actions were eventually declared unlawful by the Chilean appeals court and the government was ordered to return trucks to their owners.