| Conflict: | Operation Dawn V |
| Partof: | Iran–Iraq War |
| Date: | 16–20 February 1984[1] (5 days) |
| Place: | Basra, Southeast Iraq |
| Casus: | Iranian invasion of Iraq |
| Territory: | Iraq holds on to the city of Basra |
| Result: | Iraqi victory
|
| Strength1: | 2 Army Corps (approx; 90,000–100,000 soldiers) |
| Strength2: | 100,000-150,000 Pasdaran and Basij |
| Casualties1: | 25,000 |
| Casualties2: | 50,000 |
As 1984 began, Iran launched the largest offensive up to that date Operation Dawn V, also known as Operation Dawn 5 or Operation Valfajr-5 (Persian). The goal of the offensive was to split the Iraqi 4th Army Corps and 6th Army Corps between Basra and Qurna, and if successful, move on the suburbs or even the city of Basra itself. It was fought between the Pasdaran, Basij and the Iraqi 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 strategic Basra–Baghdad highway. However the Iranians 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 the Iranians failed to achieve their objective. This operation was the biggest of the Dawn operations.