Imagine an urban counterinsurgency in a sectarian setting. It would probably be your bottom pick of conflict, as the Iraq adventure showed.
Now imagine an army on the ropes and devoid of actionable intelligence. The ancient Sun Tzu might have been the first to wed intel and victory, but his concept still rang true in Northern Ireland during the Troubles (1968-1998).
Yet it’s hard to obtain intel in a regular conflict, nevermind in a religiously divided battlefield where even your local allies may have a different agenda.
Hard, yes, but not impossible.