Question: The Battle of Ostrach, occurred on 20–21 March 1799, which Austrian field-marshal,had victory in the battle, under his command?
Context: Sir Charles Thompson, 1st Baronet (c.1740 – 17 March 1799) was a British naval officer.  After long service in the Seven Years' War, American War of Independence and War of the First Coalition, he was Admiral John Jervis's second in command at the battle of Cape St Vincent.  However, his disregard for Jervis's signal to tack to counter a Spanish attacking move nearly lost the battle, and began an enmity with Jervis that eventually (with ill health) led to Thompson's retirement.  From 1796 to 1799 he was also MP for Monmouth. The Battle of Ostrach, also called the Battle by Ostrach, occurred on 20–21 March 1799.  It was the first battle of the War of the Second Coalition.  The battle resulted in the victory of the Austrian forces, under the command of Archduke Charles, over the French forces, commanded by Jean Baptiste Jourdan. Jean Marie Noël Godefroy Calès (] ) was a french physician and politician born on 21 March 1799 in Saint-Denis (Seine-Saint-Denis), and deceased on 25 July 25 1868 in Villefranche-de-Lauragais (Haute-Garonne). Deux Frères was a tartane that the French Navy had requisitioned in March 1798 at Marseille and commissioned as a transport.  A British division under the command of Commodore Sir Sidney Smith in "Tigre" captured her on 18 March 1799 at the siege of Acre in 1799.  She was one of a flotilla of seven vessels and Smith took all into the Royal Navy.  At the time of her capture "Deux Frères" was armed with four guns and had a crew of 23 men.  One of the seven captured vessels was lost in a gale at the siege; the lost vessel was almost certainly "Deux Freres" as the other six have a readily identifiable subsequent history. The Battle of Feldkirch (23 March 1799) saw a Republican French corps led by André Masséna attack a weaker Habsburg Austrian force under Franz Jellacic.  Defending fortified positions, the Austrians repulsed all of the French columns, though the struggle lasted until nightfall.  This and other French setbacks in southern Germany soon caused Masséna to go on the defensive.  The War of the Second Coalition combat occurred at the Austrian town of Feldkirch, Vorarlberg, located 158 km west of Innsbruck. Archduke Charles of Austria, Duke of Teschen (German: Erzherzog Carl Ludwig Johann Joseph Laurentius von Österreich, Herzog von Teschen; 5 September 1771 – 30 April 1847) was an Austrian field-marshal, the third son of Emperor Leopold II and his wife, Maria Luisa of Spain.  He was also the younger brother of Francis II, Holy Roman Emperor.  Despite being epileptic, Charles achieved respect both as a commander and as a reformer of the Austrian army.  He was considered one of Napoleon's most formidable opponents. Battle of Verona on 26 March 1799 saw a Habsburg Austrian army under Pál Kray fight a First French Republic army led by Barthélemy Louis Joseph Schérer.  The battle encompassed three separate combats on the same day.  At Verona, the two sides battled to a bloody draw.  At Pastrengo to the west of Verona, French forces prevailed over their Austrian opponents.  At Legnago to the southeast of Verona, the Austrians defeated their French adversaries.  The battle was fought during the War of the Second Coalition, part of the French Revolutionary Wars.  Verona is a city on the Adige River in northern Italy. On 25 March 1799, French and Austrian armies fought for control of the geographically strategic Hegau in present-day Baden-Württemberg.  The battle has been called by various names: First Battle of Stockach, the Battle by Stockach, and, in French chronicles, the Battle of Liptingen (or Leibtengen). The [First] Battle of Stockach occurred on 25 March 1799, when French and Austrian armies fought for control of the geographically strategic Hegau region in present-day Baden-Württemberg.  In the broader military context, this battle constitutes a keystone in the first campaign in southwestern Germany during the Wars of the Second Coalition, part of the French Revolutionary Wars. Charles Mayer (21 March 1799 in Königsberg – 2 July 1862 in Dresden), also known as Carl Mayer or Charles Meyer, was a Prussian pianist and composer active in the early 19th century.
Answer: Archduke Charles of Austria, Duke of Teschen