The commission was established at the conference plenary session of 25 January 1919, and consisted of representatives of the five major Allied powers – the US, the British Empire, France, Italy, and Japan – with the addition of Belgium, Greece, Poland, Romania and Serbia (later:
Kingdom of Serbs, Croats and Slovenes). Its members were as follows: USA: •
Robert Lansing,
United States Secretary of State •
James Brown Scott, professor of law at
Johns Hopkins University British Empire: •
Gordon Hewart,
Attorney General • or:
Ernest Pollock,
Solicitor General •
William Massey,
Prime Minister of New Zealand France: •
André Tardieu, Commissioner General for Franco-American Affairs of War • alternate: Captain R. Masson • Ferdinand Larnaude,
Dean of the
Paris Law Faculty Italy: •
Vittorio Scialoja,
Senator,
Foreign Minister after 26 November 1919 • alternates: A. Ricci-Busatti, chief of the claims section in the
Ministry of Foreign Affairs, and Gustavo Tosti,
Consul General • Raimondo • then: G. Brambilla, Counselor of Legation (3 February) • then: M. d'Amelio, counselor to the
Court of Cassation (16 February) Japan: •
Mineichirō Adachi,
Envoy Extraordinary and Minister Plenipotentiary to Belgium •
Harukazu Nagaoka, counselor of the Japanese Embassy in France • then:
Sakutaro Tachi, law professor at
Tokyo Imperial University (15 February) Belgium: • Edouard Rolin-Jaequemyns, Secretary General of the Belgian Delegation to the Peace Conference Greece: •
Nikolaos Politis,
Foreign Minister Poland: • Constantin Skirmunt, member of the
Polish National Committee • then: Leon Łubieński, member of the Polish National Committee (14 February) Romania: • S. Rosental, legal consultant Serbia (later: Kingdom of Serbs, Croats and Slovenes): •
Slobodan Jovanović, law professor at the
University of Belgrade • alternates:
Kosta Kumanudi, law professor at the
University of Belgrade, and Mileta Novaković, lecturer at the University of Belgrade The Commission was divided into three sub-commissions as follows: • on Criminal Acts, charged with investigating into war crimes allegations • on Responsibility for the War, charged with recommending which individuals to indict for bringing about the war (on the diplomatic level) • on Responsibility for the Violation of the Laws and Customs of War, charged with deciding whom to indict for crimes committed during the war ==Recommendations made by the Commission==