After the death of General Vladimir Kappel on 25 January 1920 during the Great Siberian Ice March, Major-General Wojciechowski succeeded him as Chief of the Eastern Front. He supervised the entrance of the White Army into Irkutsk and on 30 January 1920 destroyed the red troops in that area and on 1 February 1920 also took the suburb of Cherm. Later, he led his forces in fierce fighting near Irkutsk, where his army was weakened by an epidemic of typhus.