25,000 The Barvenkovo–Lozovaya offensive was a Red Army operation on the Eastern Front in the European Theatre of World War II; it took place between 18 and 31 January 1942.

The plan of the operation was to have both Fronts jointly break through the defenses between Balakliia and Artyomovsk, to advance in the rear of the enemy forces in the Donbass-Taganrog area, to push it towards the coast of the Sea of Azov and destroy it there.

The Soviet command failed to perform the task to encircle and destroy a large group of the Wehrmacht.

The command of the Soviet troops, acting at the initial stage decisively, did not take the necessary measures to expand the breakthrough on the flanks.

However, the operation itself, which began in the second half of January 1942, started too late to affect the overall outcome of the Battle of Moscow.