My wife and I visited Kopp that afternoon. You were allowed to visit prisoners who were not incommunicado, though it was not safe to do so more than once or twice. The police watched the people who came and went, and if you visited the jails too often you stamped yourself as a friend of ‘Trotskyists’ and probably ended in jail yourself. This had already happened to a number of people.

Kopp was not incommunicado and we got a permit to see him without difficulty. As they led us through the steel doors into the jail, a Spanish militiaman whom I had known at the front was being led out between two Assault Guards. His eye met mine; again the ghostly wink. And the first person we saw inside was an American militiaman who had left for home a few days earlier; his papers were in good order, but they had arrested him at the frontier all the same, probably because he was still wearing corduroy breeches and was therefore identifiable as a militiaman. We walked past one another as though we had been total strangers. That was dreadful. I had known him for months, had shared a dug-out with him, he had helped to carry me down the line when I was wounded; but it was the only thing one could do. The blue-clad guards were snooping everywhere. It would be fatal to recognize too many people.

The so-called jail was really the ground floor of a shop. Into two rooms each measuring about twenty feet square, close on a hundred people were penned. The place had the real eighteenth-century Newgate Calendar appearance, with its frowzy dirt, its huddle of human bodies, its lack of furniture – just the bare stone floor, one bench and a few ragged blankets – and its murky light, for the corrugated steel shutters had been drawn over the windows. On the grimy walls revolutionary slogans – ‘Visca POUM!’ ‘Viva la Revolución!’ and so forth – had been scrawled. The place had been used as a dump for political prisoners for months past. There was a deafening racket of voices. This was the visiting hour, and the place was so packed with people that it was difficult to move. Nearly all of them were of the poorest of the working-class population. You saw women undoing pitiful packets of food which they had brought for their imprisoned men-folk. There were several of the wounded men from the Sanatorium Maurín among the prisoners. Two of them had amputated legs; one of them had been brought to prison without his crutch and was hopping about on one foot. There was also a boy of not more than twelve; they were even arresting children, apparently. The place had the beastly stench that you always get when crowds of people are penned together without proper sanitary arrangements.