sentences:  For operations in the jungles of Burma a tank mounted flamethrower was a "desirable weapon".However the Churchill Crocodile was considered unsuitable because the fuel and propellant were in a wheeled trailer.An internal system with the projector in the turret - known as "Salamander" - was not satisfactory so Lagonda developed an external system codenamed "Adder" (if fitted to a Sherman tank) or "Cobra" (on the Churchill tank).