The Angels of Mons by Arthur Machen

Then it fell out in the sacring of the Mass that right as the priest heaved up the Host there came a beam redder than any rose and smote upon it, and then it was changed bodily into the shape and fashion of a Child having his arms stretched forth, as he had been nailed upon the Tree. -- Old Romance.

So far things were going very well indeed. The night was thick and black and cloudy, and the German force had come three-quarters of their way or more without an alarm. There was no challenge from the English lines; and indeed the English were being kept busy by a high shell-fire on their front. This had been the German plan; and it was coming off admirably. Nobody thought that there was any danger on the left; and so the Prussians, writhing on their stomachs over the ploughed field, were drawing nearer and nearer to the wood. Once there they could establish themselves comfortably and securely during what remained of the night; and at dawn the English left would be hopelessly enfiladed -- and there would be another of those movements which people who really understand military matters call "readjustments of our line."