From a trot the troop broke into a gallop, and soon were beyond the farthest trenches. Skirting this at the extreme north—close to the sea—they progressed still further toward the enemy. It was the boys' duty, if possible, to find out the position of the German forces at this point and to determine their numbers; also the strategic positions that could be used by either army.

Now an order was given for the troop to spread out, and, leaving the road, the two lads led their men into the woods, where they could advance with less danger of being seen. They had not been ordered forward to give battle, and there would be no fighting unless it became necessary in order that their mission might be successful.

But, as in most missions upon which the lads had been dispatched, there was to be fighting; and these British were not the men to turn their backs upon the enemy without giving them a warm reception.

From the shelter of the sand dunes there came suddenly a fusillade. Two
British troopers reeled in their saddles and tumbled to the ground.

CHAPTER II.

A BIT OF HISTORY.

While Hal and Chester and their troop of British cavalry are preparing to meet this unexpected attack, it will be well to introduce here a few words relating to the positions of the gigantic armies battling in France and Belgium.

The war had now been in progress for five months. From the time that the
Allies had braced and checked the Germans in their rapid advance upon
Paris, and had assumed the offensive themselves, they had progressed
consistently, if slowly.

The Germans contested every inch of the ground, and all along the great battle line, stretching out for almost four hundred miles, the fighting had been terrific. Day after day, week after week, month after month the terrible struggle had raged incessantly. The losses of all four armies, German, British, French and Belgian, had been enormous, although, up to date, it was admitted that the Germans had suffered the worst.

The conflict raged with advantage first to one side and then to the other. Assaults and counter-assaults were the order of the day. From Ostend, on the North Sea, now in the hands of the Germans, to the southern extremity of Alsace-Lorraine, the mighty hosts were locked in a death grapple; but, in spite of the fearful execution of the weapons of modern warfare, there had been no really decisive engagement. Neither side had suffered a severe blow.