A general discussion of General Douhet's military philosophy and of his contributions to the theory of strategic aircraft use.
Brodie, Bernard, The Heritage of Douhet. Santa Monica, CA: RAND Corporation, 1952. https://www.rand.org/pubs/research_memoranda/RM1013.html. Also available in print form.
Brodie, Bernard, The Heritage of Douhet, Santa Monica, Calif.: RAND Corporation, RM-1013, 1952. As of January 12, 2022: https://www.rand.org/pubs/research_memoranda/RM1013.html