Seven Years' War: 1758 and the Soldier-Emperor
The Archduchy of Austria, at first being able to focus all of its efforts on its smaller rival to the north, was now forced to divide its attention between Prussia and the Empire. Realizing that the large army under the Greek Emperor was now the larger of the two threats, Maria Theresa sent Field Marshal Leopold Josef Graf Daun, Prince of Thiano, with an army of 80,000 to confront the Emperor.
Both armies were of similar size, and Thiano, being the more cautious sort, was reluctant to throw his army into an all out confrontation with the Emperor. Emperor Konstantinos XVI on the other hand believed that a strong offense would be the Empire’s best defense in this war, and for several weeks maneuvered against Thiano, attempting to force the Austrian army into a confrontation.
Thiano however, though cautious, did not suffer from the incompetence that plagued the Prince of Soubise. His maneuvers against the Emperor were not merely to avoid a direct confrontation, but to lure the Romans into terrain favorable to the Austrian army. The terrain he chose was in the Austrian province of Krain, near the city of Celje.
The Alpine terrain of the area favored a defensive position, while still allowing Thiano to maneuver his army enough to prevent Konstantinos from simply going around him. Though the Emperor was now concerned with the fact that the Austrians held an important defensive position near Celje, he was still as determined as ever to deal the Austrians a crushing defeat.
In an attempt to cut off Thiano’s flow of supplies, Konstantinos besieged and quickly captured Celje. Thiano however, was still able to receive enough supplies from Valenje to keep his army in fighting condition. Unable to starve his enemy out of his defensive position, the Emperor was forced to attack on September 17th of 1758.
Thiano had placed the center of his army along the pass leading out of Celje. His army had constructed wooden palisades to augment the mountainous terrain’s natural defensive advantage, as they prepared for the Imperial army’s assault.
Konstantinos opened with an artillery barrage at 6 AM, attempting to shake the morale of the Austrian army and to hopefully destroy some of their palisades before his attack. The Austrian’s fired their own cannon at the enemy to better affect, as the Roman army remained mostly out in the open prior to their advance.
Finally, at roughly 10 AM the Emperor gave the order for the army to advance. In a show of discipline and coordination, the majority of the ’first line’ troops - some 30,000 men - were on the march by 10:20.
Thiano’s line was carefully positioned at several key spots in order to fully exploit the uneven terrain. Roman soldiers attacking the Austrian line would find themselves often having to do so uphill, offering the defenders a notable advantage.
The Emperor had sent nearly his entire first line of 30,000 men to attack ahead of the rest of the army. He believed the superior drilling of his soldiers were counteract the Austrian’s height advantage. The Austrian defenses proved to be strong however, and the Romans suffered extensive casualties attempting to breach them.
The heavily drilled Roman soldiers however were beginning to break through the Austrian palisades despite their high losses. Seemingly in response to this, the Prince of Thiano sent a detachment of 40 cavalry squadrons from his right towards the extended Roman center, hoping to isolate them. The Emperor responded by sending the bulk of his cavalry, including those in reserve, to head the Austrians off.
The Imperial cavalry succeeded in preventing their Austrian counterparts from charging into the Roman center, and proved their superiority against them, gradually driving them back towards the Austrian line.
However, while he had deployed the bulk of his cavalry in the aforementioned attack, Thiano had quietly dispatched a force of 30 squadrons to circle around to the left of their armies, using the line of hills present in the terrain he had lured the Emperor on to as cover. By the time the Emperor saw them approaching his exposed center from around the left, the majority of his cavalry had already pursued the Austrian squadrons they were engaged with a good distance away from the main battle.
Knowing that his first line divisions would soon have their exposed flank attacked by the Austrian cavalry, the Emperor gave into to his commander’s pleas and ordered his army cease their attack on the Austrian palisades and withdraw from the field.
The Roman infantry withdrew in good order, though quickly. Many of the Austrian infantry behind the palisades attempted to climb over their bettered defenses to pursue the Roman infantry, but had difficulty forming a coherent and effective bayonet charge in a timely manner after reaching the other side.
The Roman infantry were able to successfully withdraw in good order, the 30 squadrons coming from the left ceasing their attack once they saw that the infantry had disengaged the main line and were capable of facing them coherently.
The Roman army retreat to Celje in good order. The Emperor had hoped to win a decisive victory, but instead had found his enemy to be tough and resilient. The Imperial Army suffered some 5,000 casualties in the Battle of Krain to Austria’s 2,000.
Though it was not a major defeat, it dashed Konstantinos’ hopes of dealing Austria a quick and crushing blow and forcing them to make a favorable peace to both the Empire and Prussia. In the Austrian camp, though Thiano had won, the Roman army was far from defeated, and he felt attacking them in Celje was too great of a risk.
With her most competent commander in the south occupying the Romans however, Maria Theresa was becoming increasingly distressed with the news she received from her generals in the north against Prussia. At the battle of Hochkirch, Frederick the Great defeated a larger Austrian army under Joseph von Siskovits.
This caused the Archduchess to panic and order Leopold back to Vienna in order to take command of an army that would be sent against Prussia. Though he lost against Frederick, Joseph von Siskovits had helped defeat a larger Prussian army earlier in the year at the Battle of Domstadtl, and the Archduchess felt he could handle the Emperor.
However Siskovits, eager to erase the perceived humiliation of his defeat at Hochkirch, was eager to go on the offensive against the Roman army at Celje, not content to merely keep them at bay while Prussia was dealt with.
Knowing that winter would soon be upon him, Siskovitz successfully convinced his commanders to reluctantly go along with his planned attack against the Roman-occupied city. The Emperor, taking his previous defeat as a lesson, had decided to take the cautious approach against this new commander, ordering his army to fortify Celje and camp there for the winter.
On November 7th, Siskovitz marched his army towards Celje, leaving the easily defendable alpine terrain Leopold had used behind. Both armies were still roughly the same size, but it was now the Imperial Army that had the advantage of a well prepared defense. The battle began with an exchange of artillery fire which lasted for several hours. Of the exchange the Austrians received the greater casualties, being mostly out in the open as opposed to behind the strong defensive barricades of the city.
Though hardly a fortress, the Emperor had used the weeks following his defeat to fortify the town as much as possible, forcing the civilian population to aid the army in constructing defensive palisades around and near the city.
Following the artillery exchange, Siskovitz ordered his first line of infantry forward, focusing his attack on the palisades built east of the city, and the ones he perceived as the weakest. Though outnumbered, the defenders of the palisade put up a dodged resistance. The Austrian soldiers’ attempts to tear down or climb over the palisades were met with only limited success, and they suffered heavy losses as a result.
Noticing the mistakes he had made only months earlier in his opponents tactics, Konstantinos decided to use his enemy’s strategy against him, and sent 35 squadrons of cavalry to attack an increasingly exposed Austrian center.
Siskovitz, not having read the reports of the previous battle extensively in his eagerness to attack, sent a larger force of cavalry to confront the Romans. However, despite being outnumbered, the superior Roman cavalry more than held their own, and actually began to press the Austrian cavalry back.
While the bulk of Siskovitz cavalry were tied down against the Roman horses, the Emperor had sent a second force of 40 squadrons, the larger of the two in this case, around the city of Celje, keeping it out of the site of the Austrians.
When they came into view of the Austrian general, he ordered the cavalry already fighting to disengage and attack the larger force. However they were already fighting a losing battle, and only suffered further casualties as they attempted to break away. Desperate to halt the incoming cavalry squadrons from attacking his exposed center, Siskovitz sent his ‘second line’ troops forward to cover them.
However, these were troops mostly from the left wing of the Austrian army, which were considered the weakest and least capable soldiers; they were the only ones close enough to reach the cavalry in time however.
The Imperial Cavalry, considered some of the best in Europe, quickly cut a swath through the Austrian troops sent against them. Though they managed to fire several volleys before they reached their line, as soon as the cavalry closed to melee, most of them fled in panic, scattering across the field.
Following their orders to the letter, the Imperial cavalry continued on towards the exposed Austrian center unhindered. Though Siskovitz had ordered them to retreat, the soldiers found themselves facing a counterattack by the Romans as soon as they started withdrawing.
Unlike their Austrian counterparts, the Roman infantry had been drilled extensively on sallying out of fortifications and palisades quickly and efficiently, and were capable of launching well organized charges against their retreating enemy.
This served to slow the withdraw of the Austrian center down, allowing the approaching cavalry to reach the majority them before they had safely made it back to the rest of the army. The Austrian center was thrown into utter chaos when the cavalry hit their exposed left flank, very few regiments being able to turn and face them in time.
While this was happening, the Emperor ordered his army to leave their palisades and fortifications and assemble for an attack. With the Austrian center hopelessly tied down fighting the Roman cavalry, the bulk of the Roman infantry were able to assemble into a line of attack and begin their march towards them.
The rest of the Austrian army attempted to come to the collapsing center’s aid, but with the sallying of the rest of the Imperial Army found themselves too being overwhelmed. As Austrian morale collapsed, more and more regiments began to break and scatter.
By 6 PM, the battle was practically over, as the Austrian army scattered across the field in panicked disarray. Siskovitz was only able to retreat in an orderly manner with about 20,000 troops. He and the remains of his army fled to Graz to the north west, where shortly after he was forced to resign by Maria Theresa for his ineptitude.
The Battle of Celje was a decisive victory for the Roman Empire, with the Imperial Army suffering only around 3,000 casualties, while the Austrians suffered over 12,000, mostly captured and/or wounded in the cavalry charge.
More than redeeming himself from his previous loss, the Emperor had opened the way to the north, where he could send an army to assist Prussia against the allies. The Austrians were now in a dire situation, and if Russia was not able to come to its aid quickly, then the Archduchess could face a humiliating defeat that could greatly upset the balance of power in Europe…
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