What was the war about between France and England?

Answer 1

It depended (and to this day depends) on whom you asked, and when. Initially, in France, it would have been 'Liberte, Egalite, Fraternite,' in opposition to the absolute rule of nobles and monarchs. Later, it would have been the opposition of the Old Regime Houses (the Habsburgs, Bourbons, Hohenzollerns, Hanoverians, etc.) to the (ostensibly autocratic) rule of Napoleon Bonaparte, and the tension between meritocracy and the privileges of nobility.

From the English perspective, at first, the French Revolution represented mutiny, and the tyranny of the masses over the best classes of society. Later, it manifested most vocally as opposition to the 'Tyranny' of Napoleon, whom they called the 'Corsican Tyrant'.