It probably is not a military branch, the way you define it, but that does not change the order of American deaths in Afghanistan, nor does it suddenly make the CIA's job safe.
Its not a Military Branch Period Ossus you missed the Point, You can't be drafted into the CIA is strickly Voluntier Only, Since we are talking about a "Draft" IE going into the MILITARY with no choice, comparing the CIA to Military Intellgence is eronus
Furthermore the dead operative in question had to voluntier not once but three times, first to server in the CIA at all, second to server over-seas and third to server as an officer(IE spy) in a hostile country
A better example is how many Prowlers where shot down and how many bombs where droped on NORAD and other facilites of Military Intellgence