does it help you with attacking as it is now?
\again, i use it for the explore bonus and don't really attack..

yea, so while playing primary just now i answered my own question, i went to the information on bonuses page, and read "greater chance of successfully attacking when oversending"

so the "subtlest" of all permanent bonuses is found in pretty much any turn i play? i don't think it needs to help at all when undersending.. and who undersends, anyways? buy weapons tech if you don't want to hold the military.