On 17 July 1927, Major Ross E. Rowell, USMC, led a flight of five DHs in a strafing and dive bombing attack against bandit forces surrounding a garrison of US Marines at Ocotal, Nicaragua. Although instances of diving attacks had occurred during World War I and Marine Corps pilots had used the same technique in Haiti in 1919, this attack was made according to doctrine developed in training and is generally considered the first organized dive bombing attack in combat. Rowell would latter attain the rank of Lieutenant General.


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http://www.tecom.usmc.mil/HD/Whos_Who/Rowell_RE.htm