British research including the Royal Army Medical Corps, Royal Army Veterinary Corps, Royal Army Dental Corps, and Queen Alexandra's Royal Army Nursing Corps. Investigations are undertaken by Lesley J Burnett from Aesculapius Research which is based in Camberley, UK.

Providing professional services that assist in locating soldiers service records, piece together their Great War history, and provide the information necessary to walk in their footsteps.

Ancestral investigations pertaining to the British Armed Forces during WWI, undertaken by Lawrence R Woodcock. Based in London, ENG.

Civil War pension searches, records held by the National Archives in Washington DC. Based in Woodbridge, VA USA.

Specialised searches at the PRO and primary London repositories including army, navy, merchant service, occupational and other UK historical records.

Specialist in Royal Air Force and prisoner of war history. Based in West Wittering, West Sussex, ENG.

Professional investigators specializing in the US Civil War. Based in Alexandria, VA.

Non-profit, self-help support group whose aim is to help people trace their American GI fathers and families. Includes free e-mailing list.