Interesting. Makes sense. Per SIGMOD 2006 paper "'A veritable bucket of facts'- origins of the data base management system", https://dl.acm.org/doi/abs/10.1145/1147376.1147382 / https://www.tomandmaria.com/Tom/Writing/VeritableBucketOfFac... , "The data base concept derives from early military on-line systems"

The term "base" used with data would correlate well with the military term for "base" and perhaps adds some color to its original context.

Perhaps a "data base" originated as "A safe refuge of facts from which you would learn, train, and launch a defense or an attack?"

Or perhaps its a "base" (basis) of facts from which you operate in a military operation?

Or perhaps someone else non-military used the term first but it picked up early resonance in the military community due to its additional connotations for them or their management?

Anyway, TIL. I wonder whether a FOIA request to NSA or DoD would turn up anything.