Canada

And 5,169 Russians are also serving in the IDF. And from many other countries. Just in case you want to post this also in the other country-specific communities (there is also a 'Russia' comm here, just fyi).

As an addition, here is a very good story of Canadians fighting in Ukraine:

One operates a Leopard battle tank in the eastern region of Sumy. Another guides drones over the Dnipro river in Ukraine’s southern Kherson province. A third — a mother from B.C. — tends to wounded recruits in a Donetsk-stationed penal unit ...

“I always told my family and friends I’m one that will go and do something, not just talk about it,” said Cowboy, the Canadian tanker whose real name Canadian Affairs agreed to withhold for security reasons ... “You can talk about it all day and pray about it all day,” he said. “But at the end of the day, if you don’t go and try to make change, there won’t be no change" ...

Reliable estimates of the number of Canadians in Ukraine are hard to pin down. Ottawa does not track how many citizens have enlisted. But early in the war, former Liberal MP Borys Wrzesnewskyj, who helped Ukrainian diplomats organize volunteers, estimated roughly 1,500 Canadians had applied to join the International Legion in 2022 ...