You might be interested in some previous threads on the Iran-Iraq War:
Human wave attacks were decisively repulsed in both World Wars. But they made a resurgence in the Iran-Iraq War in the 1980s. What changed to make them effective again? - 19 comments, over 1 year old.
This thread analyzes the successes and failures of human wave attacks in large scale wars from the Franco-Prussian War (1870-1871) onwards and talks about their shared factors with the Iran-Iraq War.
Considering Iraq's superiority in technology, man power and resources, how did they fail to win the Iraq - Iran war? - 45 comments, over 1 year old.
This thread gets into the manpower advantage that Iran had in the war and how it utilized them to combat Iraq's military.