Alissa Simon Film CriticA naïve teenager comes of age amid the carnage of World War I’s Eastern Front in this propulsive adaptation of Aleksandrs Grins’ 1934 patriotic classic “Blizzard of Souls.” With its muscular direction by former documentarian Dzintars Dreibergs, atmospheric cinematography and careful attention to period detail, this account of a troop of Latvian Riflemen fighting first for the Russian Imperial Army against invading German forces and then for an independent Latvia should