It was a near thing, as Napoleon came within a hair's breadth of defeating the allies in detail.
Give me night or give me Blücher ...
- Arthur Wellesley, Duke of Wellington at 5:45 PM
While Wellington has a reputation for being a cold fish, he deeply regretted the loss of blood that day.
My heart is broken by the terrible loss I have sustained in my old friends and companions and my poor soldiers. Believe me, nothing except a battle lost can be half so melancholy as a battle won.L'Empereur no doubt regretted the loss of the Empire, and being hustled away to a remote island in the South Atlantic. It is not known whether he regretted more the loss of the Old Guard's charge, or of the men. But Europe (mostly) was at peace for a century after the blood splattered day at Waterloo.