Whatever Dr. Tiernay might have _thought_, he was by this time beginning to realise that in the fog it was impossible to _know_ anything--even the positions of his own cripples. "Are ye all there, wid as many legs an' arms as ye have whole?" he called, after he had given the order for them to fall in; "for, by the Lord that made me, I must take ye on trust; ye might be anybody." He paused; his eyes lit up suddenly; he gave a wild hooroosh. "I have it, men; let's play the fog on the divvies, an' be damned to them. They can't see us, so let's take them in flank at the zig-zag. Smith, out wid yur engineer's eye an' tell me what's the length of the zig-zag--wan zig of it, I mane." Smith, in the fog, thought a moment or two. "Close on a mile, sir, more or less, and there's four of them." "Say three-quarters, and we are fifteen; no, it's fourteen, for we had to leave poor Tompkins wid his crutches an' the horse-pistols. Tompkins absent." "Beg pardin', sir," came a voice from the fog; "Tompkins present. Come a all-fours down the short cut quite easy." "Fifteen," corrected the doctor, calmly, "fifteen into twelve hundred yards. Faix, it'll have to be open order."--He paused for an odd catch in his breath, something between a laugh and a sob. "See here, ye gomerauns--English, Irish, Scotch, whatever ye are--that's our game. We're not fifteen; we're fifteen hundred." The cripples out of the fog broke into a faint cheer. "You've got it, Mick Tiernay!" they assented wildly. "You've got it, doctor dear! The fog's our game." "We're fifteen hundred strong, an' we're each of us a hundred men an' two officers," called the doctor back. "Now, d'ye understand, men? open order it is--wan hundred yards or thereabouts, at the top zig-zag, and chargin' down on the divvies in flank--an' the gift of tongues--an' Donnybrook Fair--Hooroosh, Pat! come on, lads." The next moment, hirpling, hobbling, unseen even of each other until sometimes a jostle would bring a low-toned witticism--"Now, then, Cap'n, keep your regiment orf mine, will ye?" or, "I'll throuble you, sorr, to respect me formation!"--the men were making their way, fast as crippledom would let them, towards their forlorn hope. And despite the witticisms, their haggard lean faces, hidden, like all else, in the fog, were stern and strained. Men's faces are so, when each man has to find place in his body for a hundred souls. "Quiet's the word. Let them come on almost to the turn," was the doctor's last injunction as he posted his men; the strongest at the narrowest end of the zig-zag because they would the soonest come upon the enemy, and so on in varying gradations of convalescence, till the line of the supposed battalion stopped at the widest end with Tompkins, who was given as much ammunition as they could spare, and told to fire freely, regardlessly.