A German writer tells us that "in this part or the front infantry fighting has given place for the time being to the action of our heavy artillery, which is subjecting to a terrible fire the positions of the enemy. These positions had been carefully reconnoitered during the lull in the fighting which prevailed during the last few months. Only after all cover is destroyed, the enemy's infantry killed or forced to retire, we take up the attack against the positions; the élan of our first attack now usually leads to a favorable result."
At Ciezkovice the Germans pushed bridges across the Biala under cover of a furious cannonade. Troops were thrown over, and after a very short struggle the village was taken. The huge oil tanks soon were in flames and Ciezkovice a heap of smoldering ruins. The Russian defense crumpled up like smoke; their position blown out of existence. Their guns were toys compared with those or the Germans and Austrians. North of Ciezkovice the Prussian Guard and other German troops under General von François fell upon the Russians and forced them to retire toward the Olpiny-Biecz line. The ground of the Russian positions on Mount Viatrovka and Mount Pustki in front of Biecz had been "prepared" by 21-centimeter (7-inch) Krupp howitzers and the giant Austrian 30.5-centimeter (10-inch) howitzers from the Skoda-Werke at Pilsen. The shells of the latter weigh nearly half a ton, and their impact is so terrific that they throw the earth up 100 feet high. Whatever had remained of the town of Gorlice in the shape of buildings or human beings was meanwhile being wiped out by a merciless spray of shells. Being the center or an important oil district, Gorlice possessed oil wells, great refineries, and a sulphuric-acid factory. As the flames spread from building to building, streets pouring with burning oil, huge columns of fire stretching heavenward from the oil wells in full blaze, and, over all, the pitiless hail of iron and explosives pouring upon them, the horror of the situation in which the soldiers and civilians found themselves may be faintly imagined. Gorlice was an inferno in a few hours. When the German infantry dashed into the town they found the Russians still in possession. Fighting hand to hand, contesting every step, the Russians were slowly driven out.
We have mentioned that German troops were moving on Senkova, southeast of Gorlice, by night. During the last two days of April the Bavarians captured the Russian position in the Senkova valley. A further move was made here during the night of May 1-2, 1915, preparatory to dislodging the Russians from the ground they still held. At seven o'clock in the morning the big howitzers started to "prepare" that ground. By ten o'clock it was deemed that every living thing had perished, when the "fire curtain" was drawn behind the Russian position. Infantry were then thrown forward—some Bavarian regiments. To their intense astonishment they were received with a most murderous fire from Russian rifles, and machine guns. The first attack failed and many were killed, few getting beyond the wire entanglements. Cautiously other troops advanced to the battered Russian trenches cut off from the rear by the artillery screen behind. Yet here again they met with strenuous resistance in the Zamczysko group of hills. The Austrian artillery shelled the heights, and the Bavarians finally took possession. The Tenth Austrian Army Corps had meanwhile conquered the Magora of Malastow and the majority of the heights in the Ostra Gora group. On Sunday, May 2, 1915, the Austro-German armies pierced the Dunajec-Biala line in several places, and by nightfall the Russians were retreating to their last hope—the line of the Wisloka. The operations round Gorlice on that day resulted in breaking the Russian defenses to a depth of over two miles on a front of ten or eleven miles. Mr. Stanley Washburn wrote from the battle field at the time: "The Germans had shot their last bolt, a bolt forged from every resource in men and munitions that they could muster after months of preparation." Of the Russian army he said, "it was outclassed in everything except bravery, and neither the German nor any other army can claim superiority in that respect."
With the center literally cut away, the keystone of the Russian line had been pulled out, and nothing remained but to retire. Ten miles north of Ciezkovice lies the triangle formed by the confluence of the Dunajec and Biala rivers and the Zakliczyn-Gromnik road. Within this triangle, commanding the banks of both rivers up to the Cracow-Tarnow line, the Russians held the three hills marked 402, 419, and 269 which figures express their height in meters.
During February and March, 1915, the Austrians attempted to dislodge the enemy, but without success. It was now necessary to take those positions before advance could be made against Tarnow, and the Fourth Austro-Hungarian Army, commanded by the Archduke Joseph Ferdinand, undertook the task. At six A. M. on May 2 the Austrian artillery opened fire against Hill 419 from Mount Val (also within the triangle), and the opposite bank of the Dunajec. After three hours' bombardment some regiments of Tyrolese fusiliers, who had crossed the valley between Mt. Val and 419 and had taken up positions at the foot of the latter, about 400 yards from the Russian trenches, were ordered to charge. Dashing up the open, steep slope the fusiliers were suddenly enfiladed from their right by a spray of machine gun and rifle fire, killing many and driving back the survivors. Next day Hill 419 was again fiercely shelled, this time with deadly effectiveness; but even then the Russians still clung to their battered ground.
The Austrians now charged the trenches on Hill 412, whence the fusiliers had been ambushed the previous day. A desperate hand-to-hand encounter, in which they had to force their way step by step, finally gave the position to the attackers. The few Russians still left on 419 could not hold out after the loss of 412. They retired northward on to Height 269, but subsequently followed the general retreat of the line. Still farther north, almost at the right flank of Dmitrieff's line, the Austrians effected a crossing of the Dunajec opposite Otfinow, thus breaking the connection between the West Galician Army of Dmitrieff, and the neighboring Russian Army on the Nida—the left wing of the northern groups commanded by Alexeieff.
Just below Tarnow, however, the Russians still held out; losing the three hills had not quite broken their defense on the Biala. The right wing of Von Mackensen's army, which had smashed the Russian front around Gorlice, rapidly moved east in an almost straight line to reach the Dukla Pass and cut off the retreat of the Russian troops stationed south of the range between Zboro and Nagy Polena, in northwest Hungary. The left wing, on the other hand, advanced in a northeasterly direction, ever widening the breach made in the enemy's domain. This clever move brought the Germans to the rear of Tarnow and onto the lines of communications of the Russians holding it. It also prevented reenforcements from reaching the truncated end of Dmitrieff's right—or what had been his right—wing. By pushing on to Dembica and Rzeszow, along which route assistance could otherwise have been sent to the Russians, Von Mackensen opened a wide triangle into Western Galicia, by drawing an almost horizontal line from Gorlice to Radymno, between Jaroslav and Przemysl, and from there perpendicular down to the Uzsok Pass.
From Uzsok to the Lupkow westward stood the Second Austro-Hungarian Army under Boehm-Ermolli on the north of the Carpathians. To his left, southwest of the Magora of Malastow, and adjoining the formidable Germanic array facing the Dunajec-Biala line lay the Third Austro-Hungarian Army under General Boroyevitch von Bojna. These two armies, it will be remembered, took part in the first offensive in January, and had been there ever since. Both of these armies now began to advance into the triangle, and the brilliant simplicity of Von Mackensen's geometrical strategy becomes clear. Let one imagine Galicia as a big stone jar with a narrow neck lying on the table before him, neck pointing toward the left hand, and he will obtain an approximately accurate idea of the topographical conditions. That side of the jar resting on the table represents the Carpathian range, solid indeed, but with numerous openings: these are the passes. The upper side of the jar represents the Russian frontier, across which the invaders had swarmed in and taken possession of the whole inside, lining themselves right along the mouths of the passes at the bottom and across the neck upwards.
For months the Austrians vainly endeavored to force an entrance through the thickest walls—from the lower edge, and from the base or bottom of the jar (the Bukowina), apparently overlooking the rather obvious proposition that the cork was the softest part and that was Dmitrieff's Dunajec-Biala line. Here at least no mountain range stood in the way. It may also be regarded as a mathematical axiom that, given sufficient artillery power, the strongest defense the wit of man could devise can be smashed. What Mackensen did, thererore, was to blow a hole through the cork, push in a pair of scissors up to the rivet, meanwhile opening the blades to an angle of about forty-five degrees. From the lower or southern shoulder of the jar the Third Austro-Hungarian Army pushes forward inside, supported on its right by Boehm-Ermolli, who had been just inside a long time, but could get no farther. They began to shepherd the Russian troops around and in the western passes toward the lower double-edged blade of Von Mackensen's terrible scissors. The Russian retreat to the Wisloka was a serious disaster for Dmitrieff; he had been caught napping, and had to pay dearly in men and guns for not having created a row of alternative positions. His force had been a cover for Brussilov's operations on both sides of the western passes as well as for the whole Russian line in the Carpathians. Now that Von Mackensen had pried the lid off, Brussilov's men in the south encountered enormous difficulties in extricating themselves from the Carpathian foothills, suddenly transformed from comparative strongholds into death-traps and no longer tenable. They suffered severely, especially the Forty-eighth Division.
Besides the menace from the northwest of Von Mackensen's swiftly approaching right, a third blade was gradually growing on the deadly scissors, in the shape of Boehm-Ermolli's and Von Bojna's forces, threatening to grind them between two relentless jaws of steel. It is Sunday, the second day of May, 1915; to all intents and purposes the battle of the Dunajec, as such, was over, and the initial aim of the Germanic offensive has been attained. The Russian line was pierced and its defense shattered. Von Mackensen's "Phalanx" was advancing two mighty tentacles guided by a master mind, remorselessly probing for the enemy's strongest points. Its formation comprised, in the northeastern tentacle, the Sixth Austro-Hungarian Army Corps and the Prussian Guards; in the southern, the Bavarians under Von Emmich and the Tenth Austro-Hungarian Army Corps under General Martiny.