Prince Harry on Monday (12) paid tribute to Queen Elizabeth II, whom he referred to

as his "compass," and promised to "honor" his father in his new role as King Charles III.

In his first public reaction since the queen's death on Thursday, Harry, 37, who leaves the

monarchy in 2020, said he is "eternally grateful" to his grandmother who is "sorely missed."

"Grandma, this moment of final departure brings us great sadness, but I am forever 

grateful for all our first encounters - from my memories of my early childhood

with you, to meeting you for the first time as my Commander-in-Chief to when

you met my dear wife and embraced your beloved great-grandchildren," he stated.

Over the weekend, Harry visited a tribute site to his grandmother in front of Windsor

Castle accompanied by his wife, Meghan Markle, and the now Princes of Wales, William and Kate.