The Finnish army uses quite different tents than they use in the US army, no personal tents like in US Army, but "half-platoon" (the special forces uses the smaller "sissi" tent meant for squads, but Lauri ain't going to the special forces). The reason is of course winter, as you have to be able to sleep outside in the tent even if it is -40 degrees or colder, and you have to be able to take care of your gear too (even guns tend to freeze down when it is cold enough). Each soldier has 245 cm (about 8ft) of space in the tent from the oven to the side of the tent, and without any gear 20 people sleep in the tent (with gear usually around 15); during Winter War horses were sometime brough in to the tents during the worst cold nights, so I think even Lauri might fit in.
The same tent model has been in use by the Finnish Army since 1920's, and pretty much similar material too (light brown coloured (these days camouflage colouredcoloured) sail canvas).