Prince Harry gets into the Invictus spirit! Smiling Duke cheers as he joins spectators at track and field finals on second day of Games in Germany

Prince Harry was in a boisterous mood today as he sang along with spectators during the athletics event at the Invictus Games.

He was cheered by the crowd as he took his seat in the stands of the Merkur Spiel-Arena in Düsseldorf, together with six members of his entourage.

As competitors took part in a 200m race, the Duke of Sussex could be seen putting his hands over his mouth and cheering along with the crowd.

The Prince was accompanied to the event by a member of the Ukrainian army supporting their team of veterans.

He was due to spend an hour at the event and will later attend the wheelchair rugby final, which is often one of his favorites to watch.

Harry has said he plans to attend as many events as possible during the weeklong competition for injured and disabled military veterans.

The Duke founded the games to aid their rehabilitation by giving them the challenge of taking part in sporting events similar to the Paralympic Games.

This year the competition runs until September 16.

A total of 550 sick, injured and wounded former and current military personnel from 21 countries participate in ten team and individual sports.

Team UK, led by Royal Navy submarine officer Lieutenant Commander James Rogers, is supported by the Royal British Legion in partnership with the Ministry of Defense.

Harry revealed at the opening ceremony on Saturday that Meghan will cheer on Nigeria at this year’s Games after discovering she is of Nigerian descent.

The Duke said that while the Sussexes are not ‘playing favourites’, the discovery means things are likely to become ‘a little more competitive’ between the pair.

“We are also very excited to have new nations joining us,” the Duke told the packed arena. “Let’s hear it for Colombia, Israel and Nigeria.”

“Now I’m not saying we’re playing favorites at home… but since my wife discovered she’s of Nigerian descent, it’s probably going to be a little more competitive this year,” he added.

Meanwhile, Harry took part in a penalty shootout on German television and lost without scoring a goal.

The duke was involved in the challenge on TV channel ZDF, together with German Defense Minister Boris Pistorius and two athletes from the Invictus Games.

Harry wore an Invictus Games shirt and joked ‘what happens before zero?’ before taking part in the penalty shootout and agreeing to wear a Germany jersey if he missed his attempts.

Instead of a goalkeeper, two holes were made in the goal for competitors to score through.

As he made his way to the spot in the studio, Harry politely joked with the spectators sitting close to the goal ‘you might want to move’ before stepping up to the marker.

After a quick dance, the Duke fired his first two attempts straight through the center of the goal, missing the gap in the bottom right corner. Although his third attempt was closer, he also missed.

The Duke then watched as Mr Pistorius calmly scored his first two chances. Harry returned later in the shootout to score three more shots, but was unable to get the ball through a gap in the top left corner.

With no German shirts around, Harry donned an FSV Mainz 05 scarf after his defeat and joked with the German politician ‘in your spare time you could manage the national team’.