At the 1944 Academy Awards, held on March 15th, 1945, 'THIRTY SECONDS OVER TOKYO' won an Oscar for 'Achievement in Special Effects'. The movie was also nominated for 'Achievement in Cinematography'.
Regrettably the film's fine, moving musical score was not even nominated.
What we learn from the attack on Tokyo, is how small things can lead to unexpected consquences, the battle of Midway and Japan's first severe naval defeat.