There's no singular answer like the question would suggest; but the most obvious example would be India; French and British troops fought here, most notably during the Seven Years War (1754/6–1763), resulting in the loss of almost all of France's Indian possessions to the British and their allies.
<span>The Trent Affair was a diplomatic crisis that took place between the United States and Great Britain from November to December 1861, during the U.S. Civil War (1861-65).</span>