The Duke of Sussex is brushing up on his Dutch ahead of the Invictus Games, which are due to take place in The Hague next month.

A video posted on social media shows Harry learning the language and wearing an all-orange outfit, getting in the mood for his trip to the Netherlands in a few weeks.

The video comes after it was confirmed Harry will miss his grandfather’s memorial service, the Duke of Edinburgh.

On Friday, a spokesperson for the Duke said Harry would not return from the United States to the United Kingdom to join the Royal Family at the high-profile event at Westminster Abbey on March 29.

He hopes to visit his grandmother the Queen soon, the spokesperson added.

In a video retweeted by the Invictus Games Foundation, Harry appears on a video call to teach four people Dutch.

He said: “Again guys, please, you know I have to do it right, and I really want to do it right too, so how do you say ‘Good afternoon, you did good work’ in Dutch?”

He is praised for his attempt to say the sentence in Dutch, then asks, “And what else, anything else do I need to know?”

One of the people helping him says, “Can you say stroopwafel?”

And he answers: “Stroopwafel. I love those.

Harry asks the people on roll call, “Do you think I’m ready?”

And they say, “We think you’re ready.

Speaking in Dutch, Harry said, “Thank you. See you soon in The Hague.

Harry is told not to forget his hat, at which point he puts on an orange hat, orange sunglasses and unzips his jacket to reveal an orange t-shirt and stands up to show orange pants.

Pointing at the camera, Harry said, “Let’s go. We are ready.”

The tweet read: “Prince Harry, Duke of Sussex is preparing for the Netherlands with some Dutch lessons.

“We look forward to giving him a warm welcome to #LaHague.

“As we all prepare for the Games, our thoughts are with the Ukrainian team, and their friends and family.”

Harry was inspired to found his Invictus Games after attending the Warrior Games in Colorado in 2013 and seeing how the challenge of competitive sports aided in the recovery of injured members of the United States Forces.

It then hosted the first games in London’s Olympic Park in 2014, followed by Orlando in 2016, Toronto in 2017 and Sydney in 2018.

The Invictus Games will take place in The Hague from April 16-22.