At Wembley in London, football's oldest rivalry will be renewed when England and Scotland face off in the latest staging point on the road to the 2018 finals in Russia.
They are also on collision course with the game's rulers.
Both countries' football associations will defy a FIFA ban by wearing black armbands with red poppy emblems.
It leaves both teams at risk of sanctions, but England and Scotland are determined to observe the custom, by which people in Britain pay respect to the country's war dead on November 11.
"It's important we represent the nation and wearing the poppy is the right thing to do."
Players on both sides have also backed the stance while Martin Glenn, the chief executive of the English FA, insisted "our legal position is right...Our moral position is right".
However, the risk of punishment by FIFA has led Northern Ireland to decide to wear plain black armbands without poppies for their home game with Azerbaijan on Friday.
Wales, too, have opted only for armbands when they host Serbia in Cardiff on Saturday.
"We felt unable to take the risk of a financial penalty or point deduction. However, as we always have done at this time of year, we will be paying our respects in other ways."
Rugby world champions New Zealand have no such reservations.
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The feared All Blacks will run out against Italy in Rome on Saturday in special versions of their famous jersey, featuring poppies embroidered into the sleeves.
"It is for the veterans and for those servicemen still serving," he said.
In Paris on Friday, a minute's silence will be held before the World Cup qualifier between France and Sweden, 12 months after 130 people were killed and hundreds injured in a series of jihadist attacks in the French capital.
The bloodshed of November 13, 2015, started outside the Stade de France where France were playing a friendly against world champions Germany.
"It was a tragic event but we must always look forward and try to turn the page, even if what happened will stay with us for the rest of our lives," admitted France goalkeeper and captain Hugo Lloris.
French president Francois Hollande will be in attendance on Friday, just as he was in 2015 when he was quickly evacuated from the VIP area as the killing spree unfolded.
Twelve months on from the Paris bloodshed, the threat of attacks remains real.
The game has since been moved from the northern town of Shkodra to the central town of Elbasan instead.
