Complex sentence: However Rowlands was in continous expedition to Manipur and Burma, that when he returned in December 1923, it was only to learn his guests were evicted by the mission authority in April 1923.
Split into simpler sentences: However Rowlands was in continous expedition to Manipur and Burma. When he returned in December 1923, it was only to learn the eviction of his guests by the mission authority in April 1923.