By Tom Geoghegan
BBC News, Nuremberg
England fans in Nuremberg for the team's World Cup clash can expect a tougher approach, the head of British police at the World Cup has said.
Nuremburg has a smaller, more residential centre than Frankurt
The residential nature of the city centre will see police use preventative powers to stop trouble, Assistant Chief Constable Steve Thomas said.
Nineteen supporters out of 70,000 were arrested in Frankfurt, where England played their first match on Saturday.
But ACC Thomas warned there could be more arrests in Nuremberg.
He said: "The England supporters must understand that we are guests in Nuremberg, and that our behaviour has to be as the guests.
"Unless they behave very well, we may see slightly more arrests here than we did in Frankfurt, because the police are more likely to use their preventative powers here because of the beauty of the town."
Fourteen uniformed British police officers are working in Nuremberg - 10 patrolling the streets and four at the airport.
Twenty other officers will be working in plain clothes as "spotters".
England play Trinidad and Tobago on Thursday afternoon. An England win will secure their passage to the second round.
Explaining the tougher strategy in Nuremberg, ACC Thomas said: "In Frankfurt, our fans were congregating in commercial areas, where few people lived.
Frankfurt's commercial centre made it easier to cope with supporters
"Nuremberg is more of a market town and people will be inconvenienced by anti-social behaviour, so there's an opportunity to use this power to take troublemakers away."
The local police would also use this power to detain any of the 91 people who have not surrendered their passports despite being subject to a banning order, should they arrive in Nuremberg, he added.
According to guidelines issued by Nuremberg police on cards given to fans in the streets, Nazi salutes or the wearing of Nazi insignia are criminal offences.
Goose-stepping or wearing Nazi helmets is not against the law but is insulting to Germans, the card said.
ACC Thomas said he was personally disappointed that some England fans insisted on singing songs about the war, but said he hoped it would be taken in good humour by the German hosts.
Only four of the people arrested in Frankfurt have been bailed to reappear in court.
Two were detained on arriving back in the UK in Leeds, after allegedly wearing SS insignia at Saturday's match.
In one incident in the city, riot police entered the main square to prevent potential disorder between England and Germany fans, after spotters advised that intervention was necessary.