Who won the Battle of Waterloo?

The allied army under Wellington, decisively supported by Blücher's Prussians arriving on the French right during the afternoon and evening.

When was the outcome decided?

In the early evening of 18 June 1815, when the Imperial Guard's attack was repulsed and the French army broke.

Why record a battle to the minute?

Because the registry deals in minutes; where sources support a decisive moment, the entry records it and labels the precision honestly.

June 18, 1815

1815-06-18 19:30 UTC

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Waterloo is decided

The Imperial Guard breaks as Prussian forces arrive, ending twenty-three years of European war.

Source ↗

What happened in this minute

The battle had been fought all day in mud when Napoleon committed the Imperial Guard in the early evening. It was repulsed, Blücher's Prussians pressed the French right, and the army dissolved.

Napoleon abdicated four days later. The settlement that followed held the great powers in a rough balance for a century.

The evening timestamp marks the collapse of the Guard, the point at which the outcome was no longer in doubt.

Questions and answers

Who won the Battle of Waterloo?: The allied army under Wellington, decisively supported by Blücher's Prussians arriving on the French right during the afternoon and evening.
When was the outcome decided?: In the early evening of 18 June 1815, when the Imperial Guard's attack was repulsed and the French army broke.
Why record a battle to the minute?: Because the registry deals in minutes; where sources support a decisive moment, the entry records it and labels the precision honestly.