Another lasting result of the battle is the use of the Red Cross by medical personnel. Created by the First Geneva Convention in 1864, the Red Cross began an international humanitarian aid group. The organisation, which would later greatly expand in size, was originally very small. Involving just 30 trained volunteer nurses from Gotha, the first actual combat mission of the Red Cross occurred on the Prussian side at Langensalza. Although Austria and Hanover were not involved in 1866, Prussia was already a member of the Red Cross Convention. Prussian medical personnel worked on the battlefield, wore the sign of the Red Cross on their arms and provided critical aid to wounded soldiers. Its legacy continues today in the form of the International Red Cross.