The Ju-87 Stuka was introduced into service in 1936 with the A model. Various improvements to its power and weapons had by 1941 bought about the D model.
Thought its design seems somewhat clunky and old fashioned the Stuka provided good service to the Luftwaffe and her allies in the ground attack role. Despite the initial perception the Stuka included some innovative features, such as an automatic pull-up system to ensure that the plane recovered from a dive even if the pilot lost consciousness from the G-forces.