Short answers, pulled from the story.
General Johann Beaulieu commanded the Austrian army during the Second Battle of Dego. His forces included units such as the Stain Infantry Regiment #50 and the Pellegrini Infantry Regiment #49 under Eugène Argenteau.
The fighting occurred on the 14th and the 15th of April 1796. The French initially captured the town on the 14th before losing it to an Austrian counter-attack on the morning of the 15th.
Napoleon Bonaparte aimed to cut the connection between the Austrian army and the Kingdom of Piedmont-Sardinia. Controlling Dego allowed him to prevent General Johann Beaulieu and General Michelangelo Colli from linking their forces together.
French casualties totaled 621 killed or wounded plus 317 captured men by the end of the battle. Initial charges on the 14th resulted in about 1,500 losses while later fighting added another 621 killed or wounded.
Austrian Colonel Josef Vukassovich led a surprise counter-attack under thick fog that caught French troops off guard. Poor discipline caused French soldiers to abandon posts to loot houses instead of maintaining a defensive perimeter around the town.