Read Prince Harry's First Tweet!

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Prince Harry has finally joined the Twitterverse.

Prince Harry has finally joined the Twitterverse and he's already mastered the hashtags.

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The 29-year-old royal bachelor tweeted publicly from an iPad on Thursday, May 15, from London's BT Tower. He asked his fellow countrymen and women to help support the Invictus Games 2014, as tickets go on sale Friday. Prince Harry joked as he tweeted, "That's why I joined the army -- I can't type fast."

The Invictus Games, of which Harry helped organize, is modeled after the United States' Warrior Games and is "an international sporting event for wounded, injured and sick Servicemen and women." Over 400 competitors from 14 nations participate in the event.

"Ultimately, this is about the men and women who have given so much and deserve our support, in their recovery, rehabilitation and on leaving the armed forces. I know people will want to join me in cheering them on from the sidelines," Harry is quoted as saying on the Invictus Games' website.

The Invictus Games 2014 will be held Sept. 10-14.