On Chanukah, two main miracles happened. First, the uprising against the Greeks; and secondly, the reestablishment of the Beis HaMikdash service, particularly finding the oil for the Menora, surviving despite attempts to sabotage, which subsequently lasted a week longer than it was meant to.
For the duration of Chanukah, an additional paragraph is inserted into our prayers. It’s contents discuss the incredibly unlikely military victory the Jewish rebels had, defeating a vastly superior Greek army. Yet the way we celebrate Chanuka revolves entirely around the second miracle, finding the oil which lasted an extra week.
Is there a discrepancy? Probably not.
However, a comprehensive military victory is miraculous, and while not entirely impossible, still fairly unlikely. But unlikely victories happen enough throughout history to downgrade it’s importance. Is it not a miracle at all then? Again, probably not.
As an isolated event, the successful war was not quite miraculous. But coupled with the oil, it was transformed. The quest to find uncontaminated oil was noble, but seemingly misguided. There is a premise in Judaism called טומאה הותרה בציבור – Purity isn’t necessarily required for public service. So why were they adamant to have it?
The Maccabees were motivated by a pursuit of fundamentalism. They were literally the extremists resisting modern interference in their lives, and did not want to compromise. So they looked for an uncontaminated pitcher of oil, and found one. But this too is only unlikely, and not impossible.
But something incredible happened, the quintessential Chanuka miracle. It lasted for eight days, not one. This marked something incredible – Hashem approved of their campaign! They were totally vindicated, and their achievements were framed in a new light – they were miracles!