Complex sentence: But soon two Belgian border guards arrived on bicycles, Sergeant Frans Habets and private Gerard Rubens, and seeing smoke coming from the bushes, Rubens rushed over to save the documents from being completely destroyed.
Split into simpler sentences: But soon two Belgian border guards arrived on bicycles, Sergeant Frans Habets and private Gerard Rubens. Seeing smoke coming from the bushes, Rubens rushed over to save the documents from being completely destroyed.