On the night of May 16, 1943, RAF 617 Squadron flew at 60 feet above German reservoirs to deliver a spinning bomb that breached two dams and reshaped strategic bombing.
On the night of May 16–17, 1943, 617 Squadron's Lancaster bombers flew at 60 feet to breach the Ruhr Valley's dams using Barnes Wallis's revolutionary bouncing bomb.
On the night of May 16, 1943, RAF 617 Squadron flew modified Lancasters at sixty feet above German reservoirs to deliver Barnes Wallis's revolutionary bouncing bomb against the Ruhr Valley dams.
On the night of May 16–17, 1943, 19 Lancaster bombers and 133 airmen executed Operation Chastise, breaching Nazi Germany's Ruhr valley dams with Barnes Wallis's revolutionary bouncing bomb.