We visited the National Memorial Arboretum at Alrewas this week - to pay our respects to the fallen and to honour the service men and women who stood for the freedom that we enjoy today. We were surprised to see that the main Armed Forces Memorial incorporated a special astronomical feature. As the time of the 11th hour of the 11th day in the 11th month arrives, a shaft of light will pass through the memorial wall and shine on to the central memorial wreath. How clever. What a stunning memorial - one of many at Alrewas.