Is it true a nail impact one famous battle?

There was such a famous short poem is in Britain:

Losting a nail, broken a shoe;Broken a shoe, fold a horse;

Fold a horse, hurt a knight;Hurt a knight, lost a battle;Lost a battle, Perish an empire.

What this poem describeis in a war called the red and white roses famous battle.In 1485, allegedly tried to hijack of England's king Richard the third in two other aristocratic family and the UK - the family of Lancaster and york to death at the battle of Persian walter.Before the battle, groom to the king's horse was less a horseshoe nail, the results of the battle, the king's horse fall, therefore, the king fell after dismount, is the American phase reversal, opponent quickly kill the king's army, Richard III then died, the family lost the throne.Shakespeare so famous verse - : "A horse lost himself!"In this story, the nail is the humble little thing, a neglect of the details.So, the butterfly effect of modern western management also like the example.