M3A1 Flamethrower Tank's name

The_Chieftain: From Zaloga: The name Satan was entirely a local initiative since the program itself was outside the usual development system. The existing flamethrowers developed by the CWS (Chemical Warfare Service) at Edgewood Arsenal were unsatisfactory for reasons I explained in the Osprey book. The Chemical Officer, POA (Pacific Ocean Area), Col. George F. Unmacht, had obtained some Canadian built Ronson flamethrowers (the type mounted in Universal Carriers). In April 1944, Unmacht instructed two of his subordinates, 1st Lt. J. P. Bolanowski and T/Sgt. B. W. Whitaker, to try mounting a Ronson inside a tank instead of the previous (and vulnerable) LVT mounting.  When it was completed, they painted “Satan” and a fire-breathing devil cartoon on the turret. This was entirely informal. After the 15 Apr 44 demonstration, Lt.Gen. Holland M. Smith requested that 24 be built for the upcoming Marianas campaign and they were codenamed “Satan”, simply because that’s what everybody had been calling them based on the turret markings. CWS-POA later adopted a modified version of the CWS designation system, but not in 1944 when this work was being done.