I think the "two years" figure is hogwash but it's fascinating none-the-less.
The Wider View: Nazi codebreaker which shortened the Second World War by two years
The Wider View: Nazi codebreaker which shortened the Second World War by two years | Mail Online
.
The Wider View: Nazi codebreaker which shortened the Second World War by two years
The Wider View: Nazi codebreaker which shortened the Second World War by two years | Mail Online
.