As 1984 began,Iran launched the largest offensive up to that dateOperation Dawn V, also known asOperation Dawn 5 orOperation Valfajr-5 (Persian). The goal of the offensive was to split theIraqi 4th Army Corps and 6th Army Corps betweenBasra andQurna, and if successful, move on the suburbs or even the city of Basra itself. It was fought between thePasdaran,Basij and theIraqi Army. In the early phase, a force of an estimated 100,000-150,000 Pasdaran and Basij, using small motorboats and then on foot moved towards the objective, then attacked using human wave tactics and in places came within a few kilometers of the strategicBasra–Baghdad highway. However theIranians lacked artillery, air support and armored protection, while the Iraqis were well equipped and entrenched in strong fortified positions.[2] The armies inflicted severe casualties on each other and theIranians failed to achieve their objective. This operation was the biggest of the Dawn operations.