 Complete the following phrase:  In the wars principal theatre, in continental Europe, the early military campaigns, which mostly occurred in the Spanish Netherlands, were generally successful for France. After a setback at the Battle of Walcourt in August 1689, in which the French were defeated by an allied army under Prince Georg Friedrich of Waldeck, the French under Marshal Luxembourg were successful at the Battle of Fleurus in 1690, but Louis prevented Luxembourg from following up on his victory. The French were also successful in the Alps in 1690, with Marshal Catinat defeating the Duke of Savoy at the 