Short answers, pulled from the story.
The Declaration of Pillnitz appeared on the 27th of August 1791. Emperor Leopold II and King Frederick William II of Prussia issued this document threatening severe consequences for any harm to Louis XVI or his family.
A stalemate developed at the Battle of Valmy on the 20th of September 1792 against Dumouriez and Kellermann. Highly professional French artillery distinguished itself during this engagement, buying time for revolutionaries and boosting their morale before Prussians retreated from France.
Napoleon Bonaparte succeeded against Sardinia and Austria in northern Italy near the Po Valley during 1796 and 1797. He separated their armies in the Montenotte Campaign, captured Milan, and finally took Mantua on the 2nd of February after defeating successive Austrian commanders.
King Frederick William II concluded the Peace of Basel on the 5th of April 1795 recognizing France's occupation of the left bank of the Rhine. The coalition fell into ruin following separate peace agreements including the Treaty of Campo Formio signed October 1797 which ceded Belgium to France.
A French invasion force consisting of 1,400 troops from La Legion Noire landed near Fishguard in Wales on the 22nd of February. Tate surrendered unconditionally by the 24th of February making this the only battle fought on British soil during Revolutionary Wars.