Complex sentence: Returning to Wales in 1933 (on account of ill health) he continued to work, arranging summer schools in various locations, before being stationed for a while at the Aberystwyth Theological College, and then in the Cilgwyn area, Newcastle Emlyn.
Split into simpler sentences: Returning to Wales in 1933 (on account of ill health) he continued to work, arranging summer schools. He later was stationed at the Aberystwyth Theological College, and then in the Cilgwyn area, Newcastle Emlyn.