I have found an interesting paper ("'Bombing to Win' at 25" published on the blog War on the Rocks) that says, Recent scholarship on historical uses of airpower in World War II highlights the utility of strategic airpower not as a war-winning instrument in its own right, but as a highly effective enabler of other services in joint operations. Unfortunately, this paper has no references. I understand that airpower has several key roles in addition to its strategic bombing capabilities (e.g., a...