Karjalan Sissit (transl. Karelian Guerrillas) was a martial-industrial / dark-ambient band which was founded by Markus Pesonen. He is located in Eskilstuna, Sweden, but Markus Pesonen is from finnish origin and his work was expression of his finnish roots. He combines neoclassical orchestral arrangements with elements of noise, power electronics and dark ambient. In February 14 2020, Karjalan Sissit was announced dead.