any rules for usage?
as in:
'meet to discuss logistic_?_ activity'

thank you!!!
They're both adjectives having the same meaning.

I'd stick with "logistic".
Right. "Logistic" is more common when you're talking about "logistics" (the science of supplying, managing materials, planning operations). Actually, I'm in charge of the logistics in our company and I've never seen "logistical" written in the documents I deal with. Emotion: smile