Calormen
In "The Horse and His Boy" , Calormen is described as being many times the size of its northern neighbours , and it is implied that its army is always either conquering more land or keeping down rebellions , in wars with which neither Narnia nor Archenland are involved . 
<triplet> The Horse and His Boy <subj> Calormen <obj> narrative location <triplet> Calormen <subj> The Horse and His Boy <obj> present in work