Question: I Cavalry Corps had a detached division that fought at the battle in which present-day country?
Sentence (from "Battle of Waterloo"): A French army under the command of Napoleon Bonaparte was defeated by two of the armies of the Seventh Coalition: a British-led Allied army under the command of the Duke of Wellington, and a Prussian army under the command of Gebhard Leberecht von Blücher, Prince of Wahlstatt.
Relevant evidence: No