Salvation Army officers, cadets (trainee officers) and soldiers often wear uniforms. The idea that they should do so originated with Elijah Cadman, who, at the Salvation Army's "War Congress" in August 1878, said, "I would like to wear a suit of clothes that would let everyone know I meant war to the teeth and salvation for the world". The uniform identifies the wearer as a Salvationist and a Christian. It also symbolises availability to those in need. The uniform takes many forms internationally but is characterised by the 'S' insignia for 'Salvation' and carries the meaning 'Saved to Serve', or 'Saved to Save'. Different colours and styles represent different ranks including soldiers, cadets, lieutenants, captains, majors, colonels, commissioner, and even the General.