International Committee of the Red Cross - Wikipedia

On October 26, 1863, an international conference began in Geneva aimed at improving medical conditions on battlefields. It was the beginning of the Red Cross. From the article:

"Up until the middle of the 19th century, there were no organized and well-established army nursing systems for casualties and no safe and protected institutions to accommodate and treat those who were wounded on the battlefield. In June 1859, the Swiss businessman Henry Dunant travelled to Italy to meet French emperor Napoléon III with the intention of discussing difficulties in conducting business in Algeria, at that time occupied by France. When he arrived in the small Italian town of Solferino on the evening of 24 June, he witnessed the Battle of Solferino, an engagement in the Second Italian War of Independence. In a single day, about 40,000 soldiers on both sides died or were left wounded on the field. Henry Dunant was shocked by the terrible aftermath of the battle, the suffering of the wounded soldiers, and the near-total lack of medical attendance and basic care. He completely abandoned the original intent of his trip and for several days he devoted himself to helping with the treatment and care for the wounded. He succeeded in organizing an overwhelming level of relief assistance by motivating the local population to aid without discrimination. Back in his home in Geneva, he decided to write a book entitled A Memory of Solferino[6] which he published with his own money in 1862. He sent copies of the book to leading political and military figures throughout Europe. In addition to penning a vivid description of his experiences in Solferino in 1859, he explicitly advocated the formation of national voluntary relief organizations to help nurse wounded soldiers in the case of war. In addition, he called for the development of international treaties to guarantee the neutrality and protection of those wounded on the battlefield as well as medics and field hospitals.

On 9 February 1863 in Geneva, Henry Dunant founded the "Committee of the Five" (together with four other leading figures from well-known Geneva families) as an investigatory commission of the Geneva Society for Public Welfare.[7] Their aim was to examine the feasibility of Dunant's ideas and to organize an international conference about their possible implementation. The members of this committee, aside from Dunant himself, were Gustave Moynier, lawyer and chairman of the Geneva Society for Public Welfare; physician Louis Appia, who had significant experience working as a field surgeon; Appia's friend and colleague Théodore Maunoir, from the Geneva Hygiene and Health Commission; and Guillaume-Henri Dufour, a Swiss Army general of great renown. Eight days later, the five men decided to rename the committee to the "International Committee for Relief to the Wounded". In October (26–29) 1863, the international conference organized by the committee was held in Geneva to develop possible measures to improve medical services on the battle field. The conference was attended by 36 individuals: eighteen official delegates from national governments, six delegates from other non-governmental organizations, seven non-official foreign delegates, and the five members of the International Committee. The states and kingdoms represented by official delegates were Grand Duchy of Baden, Kingdom of Bavaria, Second French Empire, United Kingdom of Great Britain and Ireland, Kingdom of Hanover, Grand Duchy of Hesse, Kingdom of Italy, Kingdom of the Netherlands, Austrian Empire, Kingdom of Prussia, Russian Empire, Kingdom of Saxony, United Kingdoms of Sweden and Norway, and Spanish Empire.[8] Among the proposals written in the final resolutions of the conference, adopted on 29 October 1863, were:

The foundation of national relief societies for wounded soldiers;
Neutrality and protection for wounded soldiers;
The utilization of volunteer forces for relief assistance on the battlefield;
The organization of additional conferences to enact these concepts in legally binding international treaties; and
The introduction of a common distinctive protection symbol for medical personnel in the field, namely a white armlet bearing a red cross, honoring the history of neutrality of Switzerland and of its own Swiss organizers by reversing the Swiss flag's colors.

Only one year later, the Swiss government invited the governments of all European countries, as well as the United States, Brazil, and Mexico, to attend an official diplomatic conference. Sixteen countries sent a total of twenty-six delegates to Geneva. On 22 August 1864, the conference adopted the first Geneva Convention "for the Amelioration of the Condition of the Wounded in Armies in the Field". Representatives of 12 states and kingdoms signed the convention:[9]."