Wednesday, April 24, 2013

Wertingen 1805

8 October

 

WAR OF THE THIRD COALITION

 

French under Marshals Joachim Murat: and Jean Lannes: approx. 11,000

Austrians under FML Franz Auffenberg.: approx 6,000

 

One of the opening battles of the 1805 Ulm envelopment, the strategic coup that virtually eliminated the Austrian field army at the beginning of the war and the first act of the Austerlitz campaign. Wertingen was a relatively small engagement but notable as the first test between the newly trained and re-organized Grande Armee of Napoleon and the veteran but also recently re-organized army of the Hapsburgs.Though most military historians classify this as an "action" or a "combat" rather than a "battle", it involved several thousand troops and resulted in the deaths of hundreds (who were probably not concerned with the finer points of historical classification). I've decided to add this battle/combat/action/skirmish to my collection because of its interesting features. In the same way, just because Pluto is no longer regarded as a full-fledged planet doesn't make it less interesting as an object of study.


THE STRATEGIC SITUATION


The Austrians under Karl Mack von Lieberich had moved their forces to the southwest, invading the French ally Bavaria. Mack's intent was to seize and concentrate around the major city, Ulm, but his forces were widely scattered and communications sporadic.

After enjoying a successful career as primarily a quartermaster officer, Mack owed his appointment to the de-facto command of the Austrian field army mostly to political string-pulling. But his authority was from the start ill defined. He was vigorously criticized by the General Staff and his subordinate commanders as having stuck his neck out too far in moving the army so far west. He was also guilty of believing what he wanted to believe and ignoring tangible and increasingly alarming intelligence reports of the actual French movements to the north and east of him. He was also prone to firing off impulsive, confusing, and contradictory orders to his corps commanders, not helping the situation.

But Mack was an aggressive and overconfident personality and meant to meet the French early, rather than wait for them to invade the motherland of Austria. Unfortunately, the French did not come at him as expected, due east through Strasburg through the Black Forest, but were swinging around and behind the over-extended Austrians from the north and east, cutting them off from their line of communications with Vienna.

Mack Sends Auffenberg up to Wertingen to Reconnoiter


Mack heard unsubstantiated reports that there was French movement across the Danube at Donauworth to the northeast. So he sent Auffenberg's division as a reconnaissance in force with nine infantry battalions and four cavalry squadrons to find out. After force-marching his grenadiers all night without encountering any French, Auffenberg settled in to bivouac around the town of Wertingen on the morning of the 8th. The town was on high ground just five miles south of the Danube where, 101 years before, another battle between the Austrians and French took place, Blenheim.

No sooner had Auffenberg's sleepless troops dropped packs, lit fires, and tried to get some rest, when reports started coming in from pickets that French cavalry was spotted in force coming down from Donauworth. After much denial on the part of Auffenberg’s staff (the reports had not come from officers of the right degree of aristocratic credentials, after all), the Austrian general eventually realized that he was being descended on by at least a full corps of French cavalry. He started to pull his infantry out of Wertingen about 1000, marching them up onto a defensible hill to the northwest of the town and put them in squares. 

Situation about 1000

Copyright 2013, Jeffery P. Berry Trust, all rights reserved

Meanwhile, chef d'escadron Remi Joseph Isidore Exelmans of Murat's staff arrived and, invested with the cavalry marshal's full authority, took tactical command of Beaumont's 3rd Dragoon Division, which was the first unit on the scene: 18 squadrons of dragoons, six of hussars (from Fauconet's V Corps cavalry division), and six horse guns, but no infantry. The young officer had two squadrons of the 8th and 5th Dragoons dismount and attack some 200 Austrian jagers, outposted in the village of Hohenreichen to the east of Wertingen. The house-to-house fighting was savage and, after committing eventually six dragoon squadrons, all on foot, and fighting all morning, Exelmans managed to overwhelm the Austrians and take the village.

At the same time, Beaumont unlimbered both his and Fauconnet's horse artillery on a hill just east of Wertingen and commenced to harry the Austrian infantry out of town. 

Having secured this strong point on his flank, Exelmans then moved four of Beaumont's dragoon regiments forward to the foot of the hill on which the enemy had deployed his squares. By about midday he also moved the six horse guns to another, higher hill to the northwest of Auffenberg's position and commenced to methodically and slowly bombard the dense Austrian formations, ideal targets for roundshot. From this position, presumably on the military crest, they dominated the Austrian six-pounders, which could not effectively reach up on to the hill at that range, thereby nullifying Auffenberg's superiority in artillery.

Situation about midday

Copyright 2013, Jeffery P. Berry Trust, all rights reserved

For a few hours Exelmans led charge after charge up the slope to attack the Austrian squares, each time being repulsed by the interlocking fire from the squares, their battalion guns, and the 400 cuirassiers and chevauxlegers of their cavalry. Each time the French squadrons would rally at the bottom of the hill and try again, while the French artillery would recommence lobbing roundshot and shell into the packed Austrians. On the Austrian side, they must have welcomed each fruitless charge of the French dragoons as a respite from the far more hurtful bombardment since the French guns would have to let up while their cavalry swirled around the squares.

But after four hours of this tedious action, the Austrian squares showed no signs of wavering. Auffenberg felt confident that if he could hold on until dark (sunset at 1740 hours this time of year in Bavaria, before daylight savings time), he could extricate his division with little loss. Exelmans, for his part, could achieve no dent in the Austrian position without infantry support. And his dragoons of Beaumont's division were getting tired of milling about on the hill just to get shot down.

Murat and Lannes Finally Show Up


By 1600 Marshal Murat with Klein's 1st Dragoon Division, as well as Marshal Lannes with the leading division of his V Corps (Oudinot’s Grenadier Division), arrived on the scene. While watching with admiration the bravery of Excelmans in his fruitless but piecemeal attacks up the slope, both marshals conferred and agreed to a combined, all-out assault on the Austrian positions, with Oudinot turning their left flank from a hidden road paralleling the hill and both dragoon divisions thundering up the hill in a massed cavalry charge.

The casualties from the hours-long bombardment from the French 8 pounders and howitzers mounted. Auffenberg saw that his men were exhausted; they had been marching and fighting for nearly 24 hours with little rest. He also saw the French massing fresh cavalry in the valley and knew that he was facing Murat's entire corps bearing down on him. It is not known if he was aware of the outflanking maneuver coming from Oudinot's grenadiers (though he may prudently have deployed some scouts from the Latour Chevauxlegers to watch that road). With a couple of hours left of light, He decided that now was the time to start an orderly withdrawal. As he ordered his squares to begin to march away to the southwest, he instructed his four cavalry squadrons to do what they could to hold off the French cavalry.

Situation about 1700

Copyright 2013, Jeffery P. Berry Trust, all rights reserved



The tired Austrian infantry started to shuffle away, trying to keep their square formations intact. This formation is not the easiest to move, even on a smooth parade ground, much less rolling countryside. Under continuing pressure from attacks on their rear and flanks, and having not slept for more than 24 hours, the retreating squares fell apart one by one, and the orderly retreat became a general rout. The French fell on the fleeing Austrians and killed or wounded some 400 and captured about 2,900, as well as 6 guns and 6 flags. Sweet darkness allowed the rest to escape to Gunzberg, about 24 miles to the southwest.

THE ASSESSMENT

Lord knows what Mack was thinking when he sent an infantry division some forty miles up the Danube to scout for the French. The hapless Auffenberg didn't have the mounted assets to move fast or reconnoiter much territory. And when he ran into the main French cavalry corps under Murat, and Lanne's V Corps, he couldn't move fast enough out of the way. While he held his own against repeated cavalry attacks for most of the day, once the French arrived with infantry and artillery, he was doomed. And Mack, amazingly (and typically) blamed him for letting himself be caught.

Auffenberg was sacked after Wertingen (unfairly as he had performed competently in defending his division), sentenced to death, and even though the sentence was commuted, lived out the rest of his life in disgrace. Mack himself was also disgraced, sacked, and court-martialed after he surrendered at Ulm 11 days later. He was not condemned to death but did spend two years in prison, with all of his rank and honors rescinded.

Wertingen is not only notable as the first contest between the two reorganized armies of France and Austria in the 1805 campaign, it is also a textbook case of a few principles of battle tactics of this era:

Cavalry vs Infantry Squares


Because Exelmans was unable to make a dent in the Austrian infantry squares for hours, even with artillery support, Wertingen clearly demonstates the success of this form of defense against cavalry. A few times during the afternoon the French dragoons made temporary breaks in the wall of bayonets, but the discipline of the Austrian infantry quickly patched up the holes. Most of the 319 casualties suffered by the French were during this stage of the battle as the controlled, close-range, interlocking volley fire of the squares took its toll on the disordered dragoons.

The biggest three vulnerabilities of the hollow square formation are 1) that it reduces its firepower to 25% on a side against an infantry line, 2) it is much less maneuverable than column or even line, and 3) it suffers from artillery fire.

The square's advantages include the fact that it presents a virtual fortress of people with sharp, pokey sticks, something no self-respecting horse will (if conscious) fling himself against. And there is a tremendous psychological bonus as the men in a square feel their backs are covered; they cannot be flanked and if wounded they will be pulled to safety behind their comrades. Squares also allow officers and NCOs to more tightly control their troops from the central position.  Finally unless the attacking cavalry troopers are armed with long lances, their swords cannot reach anyone in a square as long as its members are formed up close and have bayonets fixed.

Combined Arms Tactics


It was only when the French supported their cavalry with the infantry from Oudinot's division that the Austrian squares were finally defeated. The laboratory of this battle demonstrated that once the French had all three arms operating in coordination (something that failed to happen 10 years later at Waterloo), the collapse of the Austrian squares, though solid throughout the day, was assured. Some war game systems give an artificial bonus to integrated attacks with the three arms (foot/horse/guns). But if the game system is elegant and simple, you should see this bonus take effect naturally.


The Principle of Elevation and Position in Artillery Tactics


Though for most of the day the French artillery was outnumbered threefold by the Austrian guns, it enjoyed an advantage in both position, range, and weight. The Austrian 6 pounder guns had an effective range of about 1,000 yards, but they could not reach the French guns on the higher hill. We presume that the French followed professional, contemporary practice and positioned their pieces on the military crest (just below the summit) to minimize the effect of any uphill firing from the enemy batteries. But this superior elevation, as well as the 1,250 yard effective range of the heavier 8 pounders meant the French could outreach their Austrian counterparts. Yet they do not seem to have wasted any ammunition trying to knock out the Austrian guns (which were still able to use devastating canister on the dragoons), but concentrated instead on the densely packed infantry squares.

Dragoons Fighting Dismounted

Another of the notable features of this battle was that in the morning the French dragoons were fighting dismounted, as dragoons had originally been intended to fight since the first units were created almost two centuries before. Mounted cavalry would not have been able to eject the Tyrolean Jagers defending the outpost at Hohenreichen; only foot troops could do that. So the dragoons demonstrated their flexibility by being able to jump down from their horses with their muskets and root out the dug-in jagers. This was vital to the need of the French to clear their own flank in order to assault on the main Austrian force beyond Wertingen.

This tactical flexibility on the part of the French dragoons was a renaissance of that arm, which had, for most of the previous century devolved into just another species of cavalry. As the Napoleonic wars unfolded, French dragoons settled back into their traditional, 18th century role as medium cavalry, rarely fighting dismounted in main battles. The next time we were to see dragoon cavalry operate as true dragoons (dismounting to fight) was half a century later in the American Civil War, where virtually all cavalry at the time fought as dragoons; maneuvering mounted and fighting on foot. 

WAR GAME CONSIDERATIONS


Austrian Discipline and Fatigue


War games of this period often short-change the Austrians in terms of their combat-efficiency. But the Austrian infantry at Wertingen showed that, even in spite of the recent reorganization of the Hapsburg army, they were able to fight tenaciously. Until exhausted, outnumbered and outflanked, they held their own for most of the day. When the French cavalry made breaks in their squares, they quickly sealed up the breaches. So in setting the combat efficiency of Austrian troops in this (and probably subsequent battles), one would do well to rate them as disciplined and courageous as the French.

However, due to the previous night's forced march, the Austrians should start off the day more fatigued than the French (however your game system rates or accounts for this).

Dismounted Dragoons


If the war game rules you use do not provide for it, having dragoons dismount to fight as infantry should also account for 1/4 of their strength being held out of the combat to hold the horses (generally it took one trooper to manage four horses).

Victory Conditions for Auffenberg


The fate of the Austrians seems inevitable in this battle. Yet in running a game of it one could give the Austrian victory points if he could hold on until night (where, presumably he'd have a better chance of slipping away unmolested). Other victory points could go to the Austrian player who inflicts greater casualties on the French.

Victory Conditions for the French


Obviously the French achieve victory if the outcome of the game is the same as history; i.e. annihilation of the Austrian division. As it happened, Auffenberg did  manage to escape with half his force to Gunzberg, making the French victory incomplete. So a goal of the French player would be to bag the entire Austrian division (nine battalions and all 18 guns).

ORDERS OF BATTLE


The following orders of battle for Wertingen were derived primarily from Scott Bowden's "Napoleon and Austerlitz" and partly from Digby Smith's "The Greenhill Napoleonic Wars Data Book" . French strengths are reported from parade states as of 23 September. Austrian unit strengths are approximate and averaged from total forces reported engaged, i.e. each battalion averaged 550 men.

French





  Coat color Facings Strength Guns Coys
Murat   11,257 9  
Beaumont, 3e Div de Dragons 2,962    
Boye   773 0  
5e Dragons / 1 5.1 143   2
5e Dragons / 2 5.2 143   2
5e Dragons / 3 5.3 143   2
8e Dragons / 1 8.1 114   2
8e Dragons / 2 8.2 115   2
8e Dragons / 3 8.3 115   2
Scalfort   730 0  
9e Dragons / 1 9.1 121   2
9e Dragons / 2 9.2 122   2
9e Dragons / 3 9.3 122   2
12e Dragons / 1 12.1 121   2
12e Dragons / 2 12.2 122   2
12e Dragons / 3 12.3 122   2
Milhaud   780    
16e Dragons / 1 16.1 115   2
16e Dragons / 2 16.2 115   2
16e Dragons / 3 16.3 115   2
21e Dragons / 1 21.1 145   2
21e Dragons / 2 21.2 145   2
21e Dragons / 3 21.3 145   2
Fauconnet   679    
9e Hussards / 1 9.1 114   2
9e Hussards / 2 9.2 115   2
9e Hussards / 3 9.3 115   2
10e Hussards / 1 10.1 111   2
10e Hussards / 2 10.2 112   2
10e Hussards / 3 10.3 112   2
Klein, 1e Div de Dragons   2,490    
Senerols   785 0  
1e Dragons / 1 1.1 124   2
1e Dragons / 2 1.2 125   2
1e Dragons / 3 1.3 125   2
2e Dragons / 1 2.1 137   2
2e Dragons / 2 2.2 137   2
2e Dragons / 3 2.3 137   2
Lasalle   809    
4e Dragons / 1 4.1 132   2
4e Dragons / 2 4.2 132   2
4e Dragons / 3 4.3 132   2
20e Dragons / 1 20.1 137   2
20e Dragons / 2 20.2 138   2
20e Dragons / 3 20.3 138   2
Milet   896    
14e Dragons / 1 14.1 114   2
14e Dragons / 2 14.2 114   2
14e Dragons / 3 14.3 114   2
26e Dragons / 1 26.1 184   2
26e Dragons / 2 26.2 185   2
26e Dragons / 3 26.3 185   2
Artillery   138 9  
2/1 Art a Chv, A, 8 pdrs 1 31 2 1
Howitzer   15 1 1
2/1 Art a Chv, B, 8 pdrs 2 31 2 1
Howitzer   15 1 1
2/2 Art a Chv, 8 pdrs 3 31 2 1
Howitzer   15 1 1
5/3 Art a Chv, 8 pdrs 4 31 2 1
Howitzer   15 1 1
Lannes, V Corps   5,667    
Oudinot   5,667    
Laplanche-Morthieres   2,785    
1e Grenadier Regt / 1 bn / 13e Ligne 1.1 684   8
1e Grenadier Regt / 2 bn / 58e Ligne 1.2 747   8
2e Grenadier Regt / 1 bn / 9e Ligne 2.1 662   8
2e Grenadier Regt / 2 bn / 81e Ligne 2.2 692   8
Dupas   2,882    
3e Grenadier Regt / 1 bn / 2e Leg 3.1 702   8
3e Grenadier Regt / 2 bn / 3e Leg 3.2 744   8
4e Grenadier Regt / 1 bn / 28e Leg 4.1 719   8
4e Grenadier Regt / 2 bn / 31e Leg 4.2 717   8
Ruffin   1,381    
5e Grenadier Regt / 1 bn / 12e Leg 5.1 682   8
5e Grenadier Regt / 2 bn / 15e Leg 5.2 699   8

Austrians



 




  Facings Strength Guns Coys
Auffenberg, III Armeekorps   5,731 18  
Baillet   5,331 18  
#55 Reuss-Greitz / 1st bn 55 1 550   4
6 pdr   17 2 2
#55 Reuss-Greitz / 2nd bn 55 2 550   4
6 pdr   16 2 2
#55 Reuss-Greitz / 3rd bn 55 3 550   4
6 pdr   19 2 2
Grenadier Bn #18 Stuart 18 G 550   4
6 pdr   24 2 2
Grenadier Bn #25 Spork 25 G 550   4
6 pdr   23 2 2
Grenadier Bn #38 Wurttemberg 38 G 550   4
3 pdr   17 2 1
Grenadier Bn #42 Erbach 42 G 550   4
3 pdr   21 2 1
Grenadier Bn #55 Reuss-Greitz 55 G 550   4
3 pdr   23 2 1
Grenadier Bn #57 Colloredo 57 G 550   2
3 pdr   21 2 1
Tyroleon Jager (in Hohenreichen) TJ 200   2
Gingen   400    
Kuirassiers #3 Erz Albert / 1st Sdn 3.1 100   2
Kuirassiers #3 Erz Albert / 2nd Sdn 3.2 100   2
Chevauleger #4 Latour / 1st Sdn 4.1 100   2
Chevauleger #4 Latour / 2nd Sdn 4.2 100   2

 

References

Bowden, Scott, Napoleon and Austerlitz, The Emperor's Press, 1997, ISBN 0962665576

Duffy, Christopher, Austerlitz 1805, Seeley Service, 1977, ISBN 085422128X


Esposito, Vincent & Elting, John, A Military History and Atlas of the Napoleonic Wars, Greenhill Books, 1999, ISBN 1853673463


Hughes, B.P., Firepower, Weapons effectiveness on the field of battle, 1630-1850, Arms & Armour Press, 
 1974, ISBN 853682291

Pivka, Otto von, Armies of the Napoleonic Era, David & Charles, 1979, ISBN 0715377663

Smith, Digby, Napoleonic Wars Data Book, Greenhill Books, 1998, ISBN 1853672769

  http://en.wikipedia.org/wiki/Battle_of_Wertingen

To see the battlefield on Google Maps' satellite version, search Wertingen, Germany. 





© Copyright 2013, Jeffery P. Berry Trust, all rights reserved. No part of this post may be used for republication or re-posting without documented permission of the Jeffery P. Berry Trust. However, feel free to link to this site as a resource from related sites.

2 comments:

  1. Another good post. Great reading. This type of information would be valuable to anyone planning on designing a game on this battle.

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  2. "Some war game systems give an artificial bonus to integrated attacks with the three arms (foot/horse/guns). But if the game system is elegant and simple, you should see this bonus take effect naturally." excellent observation..J G Nazor

    ReplyDelete