Camilla’s health battle comes on the heels of a year full of medical woes for the royal family. In February, King Charles announced he was diagnosed with cancer, only to be followed by the Princess of Wales, aka Kate Middleton, sharing her own cancer diagnosis in March.

King Charles, Prince William and Kate Middleton stepped out together at the Festival of Remembrance on Nov. 10 and Remembrance Sunday service at the Cenotaph war memorial on Nov. 11, staple events on the royal family's annual calendar to commemorate British and Commonwealth lives lost in war.

Britain's Queen Camilla said she was "on the mend" as she returned to work on Tuesday after suffering from a chest infection. Camilla, 77, was forced to cancel a number of engagements and missed last weekend's Remembrance Sunday event after falling ill,