50t KWA Warwell
The 50-ton 'Warwell' wagons became necessary during the Second World War when US-built Sherman tanks were planned to be shipped to Britain and stored pending Operation Overlord, the invasion of Europe (commonly known as D-Day). These tanks were too high to be carried on flat wagons in Britain because they would foul bridges and tunnels. Insufficient suitable well wagons were available, so the Ministry of Supply commissioned the 'Warwell' wagons.