Captain Tom Moore has become a household name after raising a huge amount for the NHS amid the coronavirus pandemic.
Captain Tom, a 99-year-old army veteran, aimed to raise £1000 by completing 100 laps of his garden in Bedfordshire before his 100th birthday on 30 April.
He finished his laps well ahead of time, winning the respect of the nation in the process, and absolutely obliterated his £1k target - raising an astounding £27million for the NHS.
Naturally, the country now wants to celebrate Tom's 100th birthday.
The mail centre that deals with his post has received more than 25,000 cards and staff have re-programmed sorting machines to re-route his mail into a dedicated collection box.
Centre manager Stephen James told the BBC: "None of the team have ever known one person receive so much mail."
Handily, you can also send Capt. Tom a virtual birthday message using the hashtag #makeacardforTom.
An eight-year-old called Reegan Davies wanted to wish him a happy 100th birthday, and started an online campaign encouraging other kids to do the same.
Reegan, whose Twitter account is run by her mum, posted a video explaining the idea which simply involves designing a card and sharing it online with the hashtag.
Children and adults alike around the country have been getting involved and sharing their cards for Tom - you can see their creations and share your own online by searching #makeacardforTom on Twitter, Instagram and Facebook.
Happy birthday, Captain Tom!
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