It was proposed that the Crocodile system be adapted for use with the M4 Sherman tank by US forces. The equipment had to be modified as the flame projector could not be fitted in place of the hull machine gun as it had been on the Churchill. Instead the projector was mounted on a platform to the right of the hull gunner under an armoured housing; the fuel line ran alongside the hull under an armoured cover.Chamberlain and Ellis p13 The British undertook to supply 100 conversion kits to the Americans prior to D-Day and a prototype Sherman Crocodile was constructed and six production examples were under construction, but American interest in the system waned and they adopted an American-developed flame variant of the Sherman. In combat this performed poorly and American interest in the Crocodile was revived.Fletcher, (2007) p.33 Four Sherman Crocodiles were supplied to the US 739th Tank Battalion.Fletcher, (2007) p.34 They were used only once, during Operation Grenade, against the heavily defended, 13th-century citadel in the town of Jülich. After heavy use of both their flame-projecters and their main guns, the tanks were able to force the German defenders to abandon the fortress.
