False or foolhardy courage that comes from consuming alcohol. A term believed to have been circulated by English sailors during the Anglo-Dutch wars of the 17th and 18th centuries. A term of derision which accused the Dutch of being cowardly and only able to fight when intoxicated. Conflicts between the Dutch and the English took place 1652-1654, 1665-1667, 1672-1674 and 1780-1784, mainly fought over trade and overseas colonies. Another claim is that the term arose when the Dutch and English were allies. Gin in its modern form was reputedly invented by the Dutch physician Franciscus Sylvius in the 17th century and English soldiers fighting alongside their Dutch allies in the Low Countries appreciated the effects of Jenever, or Dutch gin. Cheap gin was widely available in London by the early 18th century, resulting a period called the gin Craze between 1695 and 1735.