After Harold became King he knew that William and Harald would be furious and soon invade!
Harold thought that William would attack straight away so he gathered his soldiers and headed to the South coast and waited, and waited, and waited.... but he never arrived! But then Harold received news that Harald Hardrada was attacking from the North of England with 10,000 Viking soldiers!! Plus-Harold Godwinson’sbrother, Tostig, was with the Viking army!!
Meanwhile... All Harald Hardrada's army knew that Harold Godwinson was down South so they thought it would take at least a week to get to where they were... (Stamford Bridge) so they were all relaxing and doing a little practicing.
So Harold Godwinson gathered all his men and very quickly marched up, collecting some more men on the way to Stamford Bridge.
When they arrived Harold Godwinson was very suprised, Harald Hardrada had left all his weapons on the other side of the lake where Harold Godwinson was! This was a very bad mistake that Harald Hardrada had made! Some of Harolds army crossed and were beating them badly!