If I understand correctly, this was reservists (presumably with mostly civilian jobs) from the Finnish Jaeger Brigade (https://en.wikipedia.org/wiki/Jaeger_Brig

If I understand correctly, this was reservists (presumably with mostly civilian jobs) from the Finnish Jaeger Brigade (https://en.wikipedia.org/wiki/Jaeger_Brigade https://en.wikipedia.org/wiki/Jaeger_Brigade) against active military personnel from the US Marine 'II Marine Expeditionary Force' (https://en.wikipedia.org/wiki/II_Marine_Expeditionary_Force https://en.wikipedia.org/wiki/II_Marine_Expeditionary_Force) and the US Army's 41st Field Artillery Brigade (https://en.wikipedia.org/wiki/41st_Field_Artillery_Brigade_(United_States) https://en.wikipedia.org/wiki/41st_Field_Artillery_Brigade_(...). Sweden, Norway and Denmark (all Nato members) have similar forces specialized in arctic combat. Source: https://www.iltalehti.fi/ulkomaat/a/828b8e66-625d-4d2a-9276-e93b9f7a2ce8 https://www.iltalehti.fi/ulkomaat/a/828b8e66-625d-4d2a-9276-... (via Google Translate).