Posted by Henri M on September 19, 2012, 6:12 am, in reply to "Re: OT ladies bowing"
It is not the national flag but the regimental standard which is bowed down for the Queen. In return the Queen and the royals make a nod (not a bow) for the standard. Royals in military uniform make a salute.
Pic: The Queen greets the regimental standard of the Marines' Corps (founded 1665) in front of the Hall of Knights. It is also visible that there is a Military Order of Willem attached to it (awarded by Queen Wilhelmina in 1946).