Complex sentence: In 1969 it was reduced to a cadre, however, the LDY (PAO) Cadre paraded their Guidon with the Royal Yeomanry Regiment in 1969 at Catterick Camp in Yorkshire.
Split into simpler sentences: In 1969 it was reduced to a cadre. The Leicestershire and Derbyshire Yeomanry (Prince Albert's Own) Cadre paraded their Guidon with the Royal Yeomanry Regiment in 1969 at Catterick Camp in Yorkshire.