According to Ethiopian sources, the invaders numbered 70,000 troops, 40 fighter planes, 250 tanks, 350 APCs, and 600 artillery, which would have meant practically the whole Somali Army. By the end of the month 60% of the Ogaden had been taken by the SNA-WSLF force, including Gode, on the Shabelle River. The attacking forces did suffer some early setbacks; Ethiopian defenders at Dire Dawa and Jijiga inflicted heavy casualties on assaulting forces. The Ethiopian Air Force (EAF) also began to establish air superiority using its Northrop F-5s, despite being initially outnumbered by Somali MiG-21s. However, Somalia was easily overpowering Ethiopian military hardware and technology capability. Soviet General Vasily Petrov had to report back to Moscow the "sorry state" of the Ethiopian Army. The 3rd and 4th Ethiopian Infantry Divisions that suffered the brunt of the Somali invasion had practically ceased to exist.