Brian,
The pilot of the 25 March 1944 erroneous shoot down (C-54, 41-37274) was Charles S. G
arber.
As you can see on following link
http://www.dtic.mil/dpmo/WWII_MIA/OTH_M_G.HTM he was a civilian and is still listed as missing.
The C-54 operated with AT or Air Transport Command according aviationarchaeology.com.
Will look if I can find something more on 42-72346 and its w/o on 23 March 1945 (info Joe Baugher's website).
Regards,
Leendert