Thanks for all the info.
From what I've been able to find here's what's out there still operating in a non historical role.
Martin Mars 2
Martin 202/404 3
Neptune 13 - 27
C-46 11
C-119 2
CL-215 Numerous
Carvair 2
Catalina 10
Tracker Numerous
Dc-3 182 + (?)
Dc-4 27 - 29
Dc-6 27 - 35
Dc-7 6
Convairs 7 - 105
Caribou ???
T-28 ???
Mostly from airlinerlist.com and
http://www.dappa.nl/airtankers.htm and a few other sources so that's why there's a few different numbers for some aircraft.
Mostly either as firefighting aircraft (46 - 79 not including the Cl-215's and Trackers) although that number seems to be constantly changing, or as cargo/passenger transports in Alaska.
I wasn't including Turboprop aircraft in the numbers, and not sure how many of the Convairs or Trackers are still using piston motors.
Does anybody know how many props are still in military service?
I know the DHC Caribou is in Aus & maybe elsewhere, these aircraft might also still be as well; Dc-3, CL-215, Tracker (Thai) & T-28. Anybody know if Prop versions of these are still used in Military service?