Complex sentence: Hermes informs Trygaeus that War has imprisoned Peace in a cave nearby and just then, as chance would have it, ghastly War comes grumbling and growling outdoors with a giant mortar wherein he intends grinding the Greeks to paste.
Split into simpler sentences: Hermes informs Trygaeus that War has imprisoned Peace in a cave nearby. Suddenly ghastly War comes grumbling and growling outdoors with a giant mortar, wherein he intends grinding the Greeks to paste.