In the 1850s, the provision of responsible government to the colonies led to increased responsibility and self-reliance. Additionally, around this time there were growing security concerns following the French annexation of New Caledonia and the outbreak of the Crimean War, and these factors led to the raising of several "volunteer" units in New South Wales, Victoria and South Australia. These formations were unpaid and were required to provide their own uniforms, although the government furnished them with arms and ammunition. As a result of their status, these units had certain privileges that militia units did not possess such as the right to elect their own officers, the ability to choose the length of their service, and being exempted from military discipline. There was an important social distinction, too, with the volunteer forces being drawn mainly from the upper class due to being unpaid. Over time, the distinctions between volunteer and militia units became less clear as some volunteer units became paid or partially paid, lost their right to elect their officers and increasingly became regulated; likewise, the militia, by consequence of the fact that although possible and sometimes "threatened", the compulsory ballot was never enacted, was essentially a volunteer force as its establishment was always maintained by voluntary enlistment.