In article memoirs of general A.I. Kosicha of the chief of a staff of 12th army case entering into Rushchuksky group are considered. Sights of the memoirist at the reasons and a course of RussianTurkish war understand 1877–1878 shortcomings of Russian army and as the description of mobilisation expansion, the economic maintenance of group is given are exposed. As parallels in history between Russia and Balkan States are spent.