“Zamietchkowski, you are a hundred percent right,” answered the Rabbi. “When I reached the third blessing, I also hesitated and asked myself, what should I do with this blessing? I turned my head in order to ask the Rabbi of Zaner and other distinguished Rabbis who were standing near me if indeed I might recite the blessing. But just as I was turning my head, I noticed that behind me a throng was standing, a large crowd of living Jews, their faces expressing faith, devotion, and deliberation as they were listening to the rite of the kindling of the Chanuka lights. I said to myself, if G-d has such a nation that at times like these, when during the lighting of the Chanuka lights they see in front of them the heaps of bodies of their beloved fathers, brothers, and sons, and death is looking from every corner, if despite all that, they stand in throngs and with devotion listening to the Chanuka blessing “Who performed miracles for our Fathers in days of old, at this season”; indeed I was blessed to see such a people with so much faith and fervor, then I am under a special obligation to recite the third blessing.”
https://ohr.edu/holidays/chanukah/miracles/2835