Prince William Birthday: Kate Middleton's Husband Looks Great In Uniform (PHOTOS)

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Prince William turns 31 years old on June 21. | Getty Images

Happy birthday Prince William!

Kate Middleton's hubby, who turns 31 on June 21, is probably preparing for the imminent arrival of his first born rather than embarking on a pub crawl to celebrate his special day.

The future king is reported to be spending the day "privately" which probably means he will be with his Duchess and maybe even his rascally brother, Prince Harry. (Although if Harry had his way, he and his bro would be getting their drink on with royal partiers Princess Eugenie and Princess Beatrice.)

But no, Will will soon be a father to the third in line to the throne (even if the royal heir turns out to be an heiress), which means that he has responsibilities back at home.

Do those responsibilities include military service – again? Princess Diana's son, who serves as a Royal Air Force helicopter rescue pilot, has reportedly not decided whether to leave the RAF, join another military branch or leave completely although some reports claim that Will has told his superiors that he has decided to "move on."

So, just in case we never see the second in line to the throne in his dashing military outfits again, let's take a look at his best moments in uniform.

Prince William's Military Uniforms
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