"Thank you, lads," Major Tempe said, warmly. "I trust, with you, that no harm will come of it. But your offer is of too great advantage to the corps for me to persist in my refusal."

Upon leaving the quarters of the commandant, the boys went at once to the house of a farmer a short distance from the village where, the day before, they had noticed two boys of about their own size. They explained to the farmer that they wanted to buy of him a suit of the working clothes of each of his sons. Greatly surprised at this request, the farmer had inquired what they could possibly want them for; and Ralph--who thought it better not to trust him with the secret--replied that, as the Prussian General had given notice that he should shoot all franc tireurs he might take prisoners, they wanted a suit of clothes, each, which they might slip on in case of defeat or danger of capture. The pretense was a plausible one; and the farmer sold them the required clothes, charging only about twice their cost, when new.

The boys took the parcel and, instead of returning to the village direct, they hid it carefully in a wood, at a short distance away. They then returned and, in the afternoon, received detailed instructions from Major Tempe.

It was arranged that the matter should be kept entirely secret, lest any incautious word might be overheard and reported. They were to start at daybreak, upon the following morning. Their cousins and Tim Doyle being--alone--taken into their confidence, their friends regretted much that they could not accompany them, and share their danger. The boys pointed out however that--even could they have spoken German fluently--they could not have gone with them as, although two strangers would excite no attention, whatever, five would be certain to do so.

The next morning they started together, as if for a walk. Upon reaching the spot in the wood where the peasants' clothes were hidden, the boys took off their uniforms--which were wrapped up, and concealed in the same place--and put on the clothes. They fitted fairly; and more than that was not necessary, as peasants' clothes are seldom cut accurately to the figure. Rounding their shoulders, and walking with a clumping sort of stride, no one would have imagined that they were other than they pretended to be--two awkward-looking young Alsatian lads.

They cut two heavy sticks, exchanged a hearty goodbye with their friends, and started for Saverne. Two hours later they were walking in its streets; staring into the shop windows, and at everything that was going on, with the open-mouthed curiosity of two young country lads. Then they made a few purchases--some coffee, sugar, and pepper--tied them in a colored pocket handkerchief, and then went into a small cabaret--where they saw some German soldiers drinking--sat down at a table, and called for some bread and cheese and beer.

While they were taking them, they listened to the conversation of the soldiers. The only information that they gleaned from it was that the men seemed to have no expectation, whatever, of any early movement; and that they were heartily sick of the monotony of the place, and the hard work of patrolling the line of railway, night and day. Presently the soldiers paid for their beer, and left; and some of the townspeople came in, and took the places they had left. Their conversation, of course, turned on the Prussian occupation, and deep were the curses heaped upon the invaders. The only thing mentioned in their favor was the smallness of their number. There were not over two hundred men; and this amount weighed but lightly upon Saverne, compared with the fifty, sixty, or a hundred quartered at every little village along the line of railway.

The boys had now learned what they most wanted to know and, paying for their refreshment, went out again into the street. Then they walked to the railway station--where they saw several soldiers, on guard--and then set off to a point where they could see the entrance to the tunnel. There two soldiers were on guard; while others were stationed, at short distances, all along the line.

The boys now went up to a wood whence, unseen themselves, they could watch the trains passing. They came along nearly every half hour; immensely long trains, filled with stores of all kinds. As it became dusk, they saw a body of Prussian soldiers marching down the line; relieving the sentries, and placing fresh ones at distances of little more than fifty yards apart. These marched backwards and forwards, until they met each other; then returning, until they faced their comrade at the other end of their beat.

"We can be off now, Percy," Ralph said, rising. "Our news is bad, for it will be by no means so easy to cut the line as we had expected. These weasels won't be very easily caught asleep."