The answer is anywhere between 40,000 and 200,000 - depending on what you read.

Last month, the British consulate in Munich, Mark Dittmer-Odell, told the BBC that it was “estimating that 500,000 fans will travel from the UK” and that “up to 200,000 could be Scotland fans”.

So as the Scots have descended on Munich and other German cities in their droves, that 200,000 figure has been widely quoted to give a sense of the vast numbers of travelling fans.

However, BBC Sport journalists on the ground have been told by the Munich Police that they expect 40,000 Scotland fans to be in the city today - both ticket and non-ticket holders.

The exact figure is hard to verify.

Officially, Scotland have 10,000 tickets for each of their three group matches - including tonight’s opener against hosts Germany - but many more will travel just to soak up the atmosphere.

Image source, Reuters

Mike, Cricklade: The people who clicked a thumbs down for Sam's Euro's wallchart are very sad indeed, great job Sam!

Elizabeth Conway
BBC Newsbeat sports reporter

This man was standing in the middle of the square at Marienplatz.

I presumed he was a Germany or Scotland fan.

But no, he’s an Austria fan! He just wants a ticket to tonight’s game because he says the atmosphere will be "incredible".

Scotland

Germany go into this tournament ranked 16th in the world.

The host nation has won one tournament - the 2014 World Cup - since they last lifted the European title in England in 1996.

Yet they are unbeaten in four matches in 2024, with their recent improved form under head coach Julian Nagelsmann including victories over the Netherlands and France.

"They're a good team, I think people were trying to talk them down a little bit," said Scotland manager Steve Clarke.

"I think Julian Nagelsmann found, like I did, it takes a while to find your best squad and team formation.

"When the draw was made I expected it to be a tough game and nothing has changed my mind."

Follow BBC Scotland's live coverage of today's build-up here.

Image source, Getty Images

That's brilliant news Blane and we are all rooting for you Theo...I am sure yours will be one Scottish household that will be smiling tonight, no matter what the result against Germany.

Scotland manager Steve Clarke has issued a word of caution, however, about the size of the task facing his side in Munich.

BBC Radio 5 Live

More from former Scotland striker Darren Jackson, who was part of the squad that faced Brazil in the opening game of the 1998 World Cup in France: "It was fantastic to just be a part of the opening game and billions of people watching. Tonight it's the same.

"You're obviously hoping that they can go and get something, but it will be very, very hard because Germany are a good side - their expectations are to win the tournament, not just to beat Scotland."

Image source, Getty Images

Image source, Getty Images

Jen Blackwood, one of the Scotland fans in Munich, speaking to BBC Radio 5 Live: "I'm an old-hand at this. My first away trip was 2003 in Germany, so after 21 years of doing this I know what I'm doing.

"We can say the party atmosphere is well and truly underway in Munich."

Image source, Reuters

Jonny Vegas: As a German, fully expecting a win tonight but I wouldn't rule out an upset either. Good set of opposing fans to get the party started too.

Image source, Getty Images

Who and where will England and Scotland be playing throughout the group stage? Here you go!

England's group-stage matches:

16 June v Serbia in Gelsenkirchen (20:00 BST)

20 June v Denmark in Frankfurt (17:00 BST)

25 June v Slovenia in Cologne (20:00 BST)

Scotland's group-stage matches:

Tonight v Germany in Munich (20:00 BST)

19 June v Switzerland in Cologne (20:00 BST)

23 June v Hungary in Stuttgart (20:00 BST)

Alex Howell
BBC football news reporter at the England camp

When Gareth Southgate took over as manager there used to be a leadership group including the captain of the side and other senior players.

However, the team are moving away from that model, with younger players encouraged to give their views to the squad.

We will be dropping into the England camp for their daily news conference from around 14:15 BST - although these times have been known to vary.

Jordan Pickford is expected to face the broadcast media although, again, this is subject to change.

Whoever is put forward and whenever they turn up, their news conference will be streamed live on this page and we will bring you the best lines in our text coverage.

England

Image source, Getty Images

Kyle Walker was made captain of Manchester City last season, following the departure of previous skipper Ilkay Gündogan to Barcelona.

The 34-year-old defender has earned 83 caps since making his England debut under Fabio Capello in November 2011.

Of England's Euros 2024 squad, only captain Harry Kane (91) has made more appearances for the Three Lions.

Alex Howell
BBC football news reporter at the England camp

Manchester City defender Kyle Walker has been appointed England's vice captain for Euro 2024.

Harry Kane is, of course, the captain.

Image source, Getty Images

The wait is almost over... Euro 2024 kicks off later as hosts Germany take on Scotland in Munich.

The BBC Sport website and app will be the 24/7 home of the tournament, with 27 matches being broadcast live on BBC TV, while BBC Sounds has coverage of all 51 games.

After tonight's opener, there will be three matches each day from Saturday to Monday. Click on either of the links below to help make your plans for the weekend:

• How to follow Euro 2024 on the BBC
• Euro 2024 Groups & Schedule

Sam is clearly ready for the Euros - are you?

Have you done your homework, studied the draw and planned out the possible match-ups in the knockout rounds?

If so, we want to hear your predictions. Who will win it? Who might be the dark horses? Who will be the biggest flops?

Get in touch via text, WhatsApp or X using the contact details above and remember to leave your name.

BBC Radio 5 Live

Former Scotland striker Darren Jackson, who played in the 1998 World Cup opener against Brazil in Paris, speaking to Adrian Chiles on 5 Live: "I just received a picture from one of my pals who is over there with the Tartan Army, I gave him my strip I wore in the Brazil game, so he's got that on. The pictures and the atmosphere look incredible."

On the game itself, which Scotland lost 2-1: "It was closer than people probably think. You lose a goal within five minutes to Brazil and you're thinking to yourself 'oh no this could be anything'.

"I thought we dug in and did really well. We kept the ball, it wasn't as though we were defending all of the time, we were disappointed to lose the goal. Tom Boyd, he hates getting reminded of the own goal. But I think our game back then can give the boys hope tonight."

On what the Scotland team can expect in Munich: "I think it'll be a lot more hostile tonight - [for us in 1998] it was against the reigning world champions, not the hosts."

Image source, Getty Images