So, what were the Duke and Duchess of Cambridge up to...and what did they wear?
While the royal duo was originally scheduled to spend only 30 minutes with the guardsmen during William's first event as Colonel-in-Chief of the Irish Guards, William and Kate reportedly honored soldiers and their families for an hour, and presented Afghanistan campaign medals to members of the Irish Guards, according to People.
William, who is the honorary colonel of the unit, also presented the Elizabeth Cross to families of three fallen servicemen in a private ceremony.
"I am proud to be your colonel," William told the guardsmen. "I am humbled by the thought of the sacrifices that you and your families have made and the losses that you suffered, all in the service of our country."
Naturally, Kate and William honored the guardsmen in style, with Kate donning a simple fascinator paired with a chic navy blue coat dress and matching heels.