Dornier Do 17s (received as a gift from Hermann Göring in 1942) and Junkers Ju 88s improved the bombing capability of the Finnish Air Force. The bomber force was also strengthened with a number of captured Soviet bombers, which had been taken in large numbers by the Germans during Operation Barbarossa. The bomber units flew assorted missions with varying results, but a large part of their time was spent in training, waiting to use their aircraft until the time required it. Thus the bomber squadrons of Flying Regiment 4 were ready for the summer battles of 1944, which included for example the Battle of Tali-Ihantala.