The October raid was the last which took place during the year 1915. On twenty several occasions during that year the Zeppelins had paid visits to various parts of the East Coast of England. They had murdered no fewer than 199 people, and had inflicted injuries upon 421 others.

CHAPTER L.

THE OVERRUNNING OF SERBIA.

December 1914 saw Serbia gloriously victorious; December 1915 saw her plunged in hopeless defeat, the remnants of her army on alien soil, her people in bondage, her aged king a fugitive. Since that August day when the Austrians "let slip the dogs of war" her peasant soldiers had fought like heroes. Thrice had Serbia been invaded, and thrice had she flung back the invader; but every success had drained her of lifeblood, and had brought the hour of her downfall nearer. She must have lost 150,000 men in action, and disease and pestilence had robbed her of another 50,000. The Serbian army was now only 200,000 strong, and there was no possible hope of increasing it. The Allies could not spare her reinforcements, nor did she ask for them. She felt that she could still hold her own, and perhaps she might have done so had not a neighbouring nation treacherously joined the enemy and flung a large and well-equipped army upon her flank.

Serbia's eastern neighbour is Bulgaria. I have already told you that Bulgaria owes her very existence to Russia. In 1878, when the Russians were nearing Constantinople, they agreed to a treaty by which the province of Bulgaria was to be formed into a new state. In the next year the Bulgarians elected a German prince as their sovereign; but his attempts to increase his territory brought about a quarrel with Russia, and in 1886 he was forced to give up the throne and leave the country. A new prince was elected—another German, Ferdinand of Saxe-Coburg-Gotha. In 1908 Ferdinand declared Bulgaria an independent kingdom, and became its first king.

On page [313] I told you that just before the fall of Brest the Germans prepared to force a road from Austria to the Bosphorus. What was the object of this new move? The Germans were in much the same position as the British and French: they were cut off from their Allies by hostile country. As you know, we undertook the ill-starred expedition to Gallipoli in order to open up communication between the Western Allies and Russia. The Central Powers were now about to invade Serbia in order to open up communication between Austria and Bulgaria and Turkey. If they could get into touch with these Balkan Powers, they could provide Turkey with munitions and supplies; they could send reinforcements into Gallipoli, and generally direct the operations of the Bulgarians and the Turks. Further, they could secure a right of way into Asia Minor, which would enable them to attack Egypt and perhaps advance to the Persian Gulf and threaten India. It was also hoped that new supplies of food, cotton, metals, and men would be tapped.

Look carefully at the map on page [393]. Follow the main railway line, which runs from the Austrian town of Semlin on the Danube through Belgrade, Nish, and Sophia, the capital of Bulgaria, to Constantinople. If the Central Powers could capture this railway, they would secure a through route from Germany to the shores of the Bosphorus. The whole aim and object of the invasion which I am about to describe was to get possession of this railway.

What was the plan of campaign? Von Gallwitz, with the great artillery engine which had driven the Russians back from Galicia into the marshes of the Pripet, was to cross the Danube between Orsova on the Rumanian border and Belgrade, and blast his way through the triangle of country between the railway and the Bulgarian frontier. At the same time the Austrians were to strike south to the west of Belgrade, and while these two movements were in progress Bulgaria was to fall upon Serbia from the east. The little Serbian army was to be taken in front and in flank at nine different points by forces which outnumbered it by at least three to one. The invaders were furnished with huge guns and vast supplies of ammunition, against which the Serbians could not hope to stand. The moment that the blow was launched the fate of Serbia was sealed.