Dambusters of WW2. Part 2. Preparing for the Raid April 25, 2019 Unipro2013main Daring Raids of WW2, World War 2 Aviation Preparing for the Raid Pure History Specials Dambusters of WW2 Part 2 Preparing for the Raid It was one of the most influential achievements of World War II, a strike at the heart of the third Reich.