Complex sentence: In 1889 the Rifles did battle with forces of Duke Robert Wilcox in the Wilcox Rebellion upon Wilcox's surrender by message he offered Ashford his Sabre.
Split into simpler sentences: In 1889 the Rifles did battle with forces of Duke Robert Wilcox in the Wilcox Rebellion. Upon Wilcox's surrender by message he offered Ashford his Sabre.