It was the year that Alderney got its first, and only, Muratti cup victory. The league of nations was founded and America saw women getting the right to vote.
But for Guernsey 1920 marked the start of the island's police force.
The force was made up of Parish Constables who joined together to form an island wide service.
In 1920, there were 750 vehicles on Guernsey’s Roads, meaning the force dealt with just 46 traffic collisions, now that number is considerably more.