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The article discusses Great Britain's Board of Longitude, an agency formed in 1714 until 1828 by the British government to promote scientific discovery and technological innovations with the original goal of developing methods for the measurement of longitude while at sea. Topics include the British government's financial support of scientific research; a study of the archives of the Board of Longitude by researchers at the Cambridge University Library; British royal astronomers; and efforts by scientists to discover methods for measuring longitude.

This article discusses the relationship between the commanders of the French and British military forces from 1939 to 1940. The Supreme Allied Command at the start of World War Two was designed to allow the officers in the various armies to coordinate with their counterparts in other commands. It focuses on the interactions between the British Expeditionary Force and French front-line forces that were present in Paris, France. It also looks at the supremacy of the French forces over the English ones.