In her second public engagement within two days, the Queen attended a parade of the armed forces in Edinburgh.

Her Platinum Jubilee in Scotland was commemorated by a parade at the Palace of Holyroodhouse.

She was also given the Edinburgh Castle key in the palace’s gardens.

The 96-year-old monarch and members of her family landed in Scotland on Monday to begin a week of royal festivities north of the border.

She participated in the traditional Ceremony of the Keys, which marked the beginning of Royal Week, shortly after her arrival.

It was her first public appearance since the Platinum Jubilee celebrations, as she has limited her public appearances due to mobility issues.

She has vowed to continue serving the nation “to the best of my abilities with the assistance of my family.”

The parade and presentation of the Edinburgh Castle key commemorate the 200th anniversary of King George IV’s visit to Scotland in 1822, during which the castle key was first delivered to the monarch.

Buckingham Palace stated that Tuesday’s event provided an opportunity for the Army, Royal Navy, and Royal Air Force to celebrate the Queen’s Diamond Jubilee in Scotland.

As the Queen entered the grounds, a royal salute was rendered, and Lord Lyon, King of Arms, presented her with three senior representatives from the services.

Three cadets from each military then marched the Edinburgh Castle key through the gardens before giving it to the castle’s governor, Major General Alastair Bruce of Crionaich.

He presented the key to the Queen, who returned it to the governor “in appreciation for the symbolic display of loyalty by our armed personnel.”

Maj. Gen. Bruce stated afterward that the Queen was in “first-class, brilliant form.”

The fact that she participated in both the arrival ceremony and is now in her palace in the heart of Edinburgh and walking out into the garden to view her armed forces is quite remarkable,” he continued.

The Queen is anticipated to remain in the Palace of Holyroodhouse, her royal home in Edinburgh, until 1 July.

Tuesday afternoon, Princess Royal will confer honors at a Palace investiture ceremony.

James McGoldrick, assistant general secretary of the United Nations, and Ross McEwan, chief executive of the Royal Bank of Scotland, will be among those honored.