During World War II Clydebank's production of ships and munitions for the allies made the town a target for the German Luftwaffe: 439 bombers dropped over 1000 bombs on 13th and 14th of March 1941. Of 12,000 homes in the town fewer than a dozen were undamaged and over 35,000 people were made homeless. The raid, known as the Clydebank Blitz, was the worst suffered by Scotland during the war and resulted in 578 civilian deaths, the total per-head of population, one of the highest in WWII was devastating.
This from wikipedia.