Princess Isabella arriving in 2026. MADS CLAUS RASMUSSEN // Getty ImagesNotably, Princess Isabella will not receive the salary or daily allowances that her fellow recruits are entitled to during their service. Crown Prince Christian made the same choice during his own service at the Guard Hussar Regiment. Martin Sylvest Andersen // Getty Images Crown Princess Isabella (center, in red) with her parents and siblings after completing her high school final exams in June. The announcement that Princess Isabella would pursue military service came in March from the Amalienborg Palace, shortly before her 19th birthday in April.