German invasion of Belgium
German military operations in Belgium were intended to bring the 1st , 2nd and 3rd armies into positions in Belgium from which they could invade France , which , after the fall of Liège on 7 August , led to sieges of Belgian fortresses along the Meuse river at Namur and the surrender of the last forts ( 16–17 August ) . 
<triplet> Namur <subj> Meuse river <obj> located in or next to body of water