While Russian and English fans pelted French police with bottles and trashed bars and restaurants, the Green Army was actually cleaning up after itself.
The fan sang "clean up for the boys in green" as they picked up trash from the area in Bordeaux they had been drinking.
A cyclist was also given a helping hand through a huge crowd of supporters.
The Green Army also paid tribute to Northern Ireland supporter Darren Rodgers, who died in Nice after a fall, the Guardian reports.
In the 24th minute of the game against Sweden, the fan chanted "Stand up for the Ulsterman" in his memory.
Of course, the Martin O'Neill coached team is going pretty well on the field as well, playing some great football in its opening 1-all draw against Sweden at Stade de France.
Next up Ireland face Belgium in Bordeaux and then Italy in Villeneuve-d'Ascq - so it's not going to get any easier on the pitch.
Let's hope their fans can continue to provide more colourful moments like these off the pitch.
CHANGING AN ELDERLY COUPLE'S TYRE
SINGING SOME IRISH CLASSICS
SINGING ABBA WITH SWEDISH FANS
-News.com.au