The British Army took lessons from the successful infantry and artillery offensives on the Western Front in late 1918. To obtain the best co-operation between all arms, emphasis was placed on detailed planning, rigid control and adherence to orders. Mechanization of the army, as part of a combined-arms theory of war, was considered a means to avoid mass casualties and the indecisive nature of offensives.[36][37] The four editions of Field Service Regulations that were published after 1918 held that only combined-arms operations could create enough fire power to enable mobility on a battlefield. That theory of war also emphasised consolidation and recommended caution against overconfidence and ruthless exploitation.[38]