Complex sentence: One, manned by McCann, one other officer and seven men, fought the Germans for an hour, although the Germans got into the post three times, each time they were counter-attacked and the Australians drove them out.
Split into simpler sentences: One, manned by McCann, one other officer and seven men, fought the Germans for an hour. Although the Germans got into the post three times, each time the Australians forced them out.