Gene Krupa And His Orchestra:
A: Vocal Chorus by Anita O'Day. B: Vocal Chorus by Johnny Desmond.
A: Recorded Feb 26, 1942, New York, NY, mx: 32495-1.
B: Recorded Dec 29, 1941, New York, NY, mx: 32062-1.
78rpmdiscography is notoriously inaccurate and in many ways should only be used for a 'relative' date for just about anything --- and even then never as your sole source
78discography.com lists Feb 26, 1942 as the recording date for both sides, but that is not correct. The Gene Krupa Sessionography reveals that "Night Of Nights" was recorded two months before (see notes), which explains its noticeably lower matrix number.
Expectedly, the newly recorded WWII song "Fightin' Doug MacArthur", with vocal by Anita O'Day, was meant as the A-side then. A tribute to real General of the Army, Douglas McArthur, it was apparently ill-timed as John Bush Jones remarks in his book, The Songs that Fought the War: Popular Music and the Home Front, 1939-1945: "Early in 1942, Buck Ram wrote 'Fightin' Doug MacArthur' ..., a swing tune for McArthur with words like a football pep song: 'He's the one who slapped the Japs right down to their size (Hit 'em, hit 'em, hit 'em, hit 'em),' which McArthur had not done by the time Ram wrote that." Actually the song went nowhere, Krupa's recording as well as the earlier version of Lucky Millinder's orchestra, "despite some high-powered national hype".
The Krupa recording and the lyrics can be found on authentichistory.com, which also has the Lucky Millinder recording.