Devastators were torpedo bombers
See <https://en.wikipedia.org/wiki/Douglas_TBD_Devastator> The 'T' is for 'Torpedo', the 'B' for 'Bomber' and the 'D' for 'Douglas', the manufacturer. . After the extremely severe losses during the Battle of Midway, Devastators were withdrawn from service. The Douglas SBD ('Scout Bomber Douglas') Dauntless was a dive bomber and reconnaissance aircraft; SBDs killed four Japanese carriers at Midway, and were involved in every major naval action in the Pacific. The TBD was replaced by the Grumman TBF Avenger. (The 'F' indicated 'Grumman', Goodyear already had the 'G'. They built blimps for the USN for ASW patrol.)