Complex sentence: By 10:00, the surviving Germans of the 261st RIR were digging in as best they could near the mouth of the ravine, still under fire, and the 262nd RIR had fallen back to its jumping off line.
Split into simpler sentences: By 10:00, the surviving Germans of the 261st RIR were digging in as best they could near the mouth of the ravine, still under fire. Further south, the 262nd RIR had fallen back to its jumping off line.