 Complete the following phrase:  The regiments first objective was to make a rapid advance across the Wallonian region and cut off any planned support coming from the hostile Holy Roman Empire and the dual monarchy of Brandenburg-Prussia. Just a year into the war, the Spanish Empire along with the aforementioned nations joined on the side of the Dutch, and the plans were halted. Instead, priority was placed on the strategic cities in the western part of the county. The first strike occurred at the Siege of Orsoy, then at the Siege of Rheinberg, the Siege of Doesburg, and finally the crossing of the Rhine. The next year, in 1673, the regiment was present at the 