No strategy. They are religious fanatics who believe in jihad and 72 virgins that they get to fukk with a penis which never goes limp. They will have an erection for eternity if they are successful in jihad.
It was narrated from Abu Umamah that the Messenger of Allah (ﷺ) said:
“There is no one whom Allah will admit to Paradise but Allah will marry him to seventy-two wives, two from houris and seventy from his inheritance from the people of Hell, all of whom will have desirable front passages and he will have a male member that
never becomes flaccid (i.e., soft and limp).’”
Hadith of the Prophet Muhammad (saws) in English and Arabic
sunnah.com