The Gambia less than wide at its widest point, with a total area of . About (11.5%) of the Gambia's area are covered by water. It is the smallest country on the African mainland. In comparative terms, the Gambia has a total area slightly less than that of the island of Jamaica. Senegal surrounds the Gambia on three sides, with of coastline on the Atlantic Ocean marking its western extremity. The present boundaries were defined in 1889 after an agreement between the United Kingdom and France. During the negotiations between the French and the British in Paris, the French initially gave the
Gambia Regiment defence. It was then decided that it should raise an additional reserve company. In 1937, the company won the Africa Cup of the Army Rifle Association, the first time it had been one by a RWAFF unit that was not from the Nigeria Regiment. In 1940, mention was first made of a Gambia Regiment FC that played against other local association football teams. In early 1940, with concern mounting about possible invasion of West African colonies by Vichy France, it was decided that the Gambia Company should be raised to the strength of a battalion, and renamed the Gambia Regiment.