Princess Mary of Denmark sports a sword-wielding style we've never seen Kate Middleton wear

Princess Mary of Denmark Wields a Sword: See the Pics!

Princess Mary of Denmark looks fierce when in uniform!

The 44-year-old royal donned camouflage clothing and a huge sword when she paid a visit to Denmark's National Guard over the weekend. Princess Mary became a lieutenant in the guard last September, and was seen participating in exercises that included sword wielding and shooting a gun. She was one of more than 5,000 volunteers who participated in the two-day exercise outside Copenhagen that is designed to support the Danish Army, Navy and Air Force in both domestic and international missions.

PHOTOS: Kate Middleton Throws a Mean Punch in Stylish Skirt and Top During Charity Event

While Mary -- who married Prince Frederik in 2004 and has four children with him -- is definitely pulling off this military look, she also gives Kate Middleton a run for her money in the formal-style department. When this princess gets dolled up, she puts on the hat, the heels, the dress and the gloves.

Princess Mary of Denmark and Crown Prince Haakon of Norway are seen after the christening of Prince Oscar of Sweden at Royal Palace of Stockholm on May 27, 2016 in Stockholm, Sweden.

Prince William, Kate Middleton and Crown Princess Mary of Denmark wear hard hats upon visiting the UNICEF Emergency Supply Centre on Nov. 2, 2011 in Copenhagen, Denmark.

Prince William, Kate Middleton, Prince Frederik of Denmark and Princess Mary of Denmark visited the UNICEF Global Supply Centre on Nov. 2, 2011 in Copenhagen, Denmark.

Though we've yet to see the 34-year-old Duchess of Cambridge in camo, she does show her sporty side from time to time. Here's a look at Kate's sailing style.

WATCH: Kate Middleton Looks Truly Badass During Her Sailing Excursion

Watch Kate Middleton Navigate British Waves Like a Total Badass During Her Sailing Excursion

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