Is there any way that Britain could lose a war at the height of its empire? I'm thinking about the 1800-1920 time frame, particularly the World War I era. Could a strong enough coalition get together to take down Britain if they really wanted to? British defeat doesn't have to mean Sealion, but it should be a pretty humiliating defeat such as the loss of all their colonies, a shattered economy, and maybe the breakup of England and Scotland. Something along those lines. What do you think - could it have happened?