The film presents an unusual blend of documentary and drama, focusing on the RAF’s preparations for bombing a large storage depot along the Rhine during wartime. It illustrates how various elements—intelligence gathering, aerial surveys, detailed planning, and combat readiness—were interwoven by different teams with diverse levels of skill before the "Wellington" bomber crews embarked on their perilous missions involving extremely low-altitude flight. The conversations are noteworthy for the formal courtesy displayed among the air officers; the film was made under the guidance of the Crown Film Unit, which aimed to produce films informing the public and reinforcing spirits during a period in the early years of WWII when Britain faced considerable challenges. It manages to cover a significant amount of ground within its 50-minute length, although it requires some patience initially, but ultimately serves as a strong illustration of the cooperation that existed at the time.

Source on TMDB