Complex sentence: Yorke served as colonel of the 19th Hussars from 1872 to 1889 and as colonel of the 1st (Royal) Dragoons from 1889 until his death in 1890.
Split into simpler sentences: Yorke served as colonel of the 19th Hussars from 1872 to 1889. He then served as colonel of the 1st (Royal) Dragoons from 1889 until his death in 1890.