Revelation 19:20

‘And the beast was taken, and with him the false prophet who wrought the signs in his sight, by which he had deceived those who had received the mark of the beast and those that worshipped his image. They two were cast alive into the lake of fire that burns with brimstone.'

The deceivers are taken and destroyed. No mention is made of a battle (unless it is between two earthly armies) for there is no battle. If anything it is a rout. They are simply taken and can offer no resistance. For their false signs see Revelation 16:13. But those false signs will be of no use to them now. As we have seen earlier the beast and the false prophet are especially satanically inspired. Indeed the beast came out of the abyss.

They are not ordinary men, for ordinary men are but their tools. In so far as they are ‘men' at all, for they represent ideas and systems, it is because they have taken possession of human beings. Those human beings will die as do the others, but the evil spirits that possess them face torment day and night for ever and ever (Revelation 20:10). What its actual form will take we cannot know, for the ‘fire' is a spiritual fire for spiritual beings and incomprehensible to human beings. (Fire in Revelation rarely actually means literal fire, but rather spiritual forces of one kind or another). The contrast between their fate and the fate of human beings is stressed. Their beings could not die nor could the birds eat them. In contrast the humans did die and the birds ate them.