Short answers, pulled from the story.
The French Army of Italy under Napoleon Bonaparte defeated Austrian forces led by Paul Davidovich and Feldmarschall-Leutnant Franz von Lauer. Masséna's division attacked Vukassovich's Austrians at Marco and later stormed their camp in Calliano to rout them.
French losses totaled 750 men while Austrian casualties ranged between 3,000 and 10,000 killed wounded and prisoners. The victors also captured 25 cannon and 7 colours from the defeated Austrian army.
Paul Davidovich commanded 19,600 troops in Trento to threaten a descent from the north while Feldmarschall-Leutnant Franz von Lauer planned an offensive down the Brenta River valley. Dagobert von Würmser intended to join forces with Johann Mészáros near Bassano del Grappa before turning southwest toward Mantua.
Masséna entered Trento on the morning of the 5th of September followed by Vaubois. This occurred after Davidovich evacuated Trento during the night and fell back to Lavis.
Napoleon discarded the strategy of joining Moreau after finding out that Dagobert von Würmser planned to march east into the Brenta valley. He ordered Vaubois to block the gorges north of Trent with 10,000 men while pursuing Würmser instead.