https://en.wikipedia.org/wiki/Acre,_Israel

Before the 1948 Arab-Israeli War broke out, the Carmeli Brigade's 21 Battalion commander had repeatedly damaged the Al-Kabri aqueduct that furnished Acre with water, and when Arab repairs managed to restore water supply, then resorted to pouring flasks of typhoid and dysentery bacteria into the aqueduct, as part of a biological warfare programme. At some time in late April or early May 1948, - Jewish forces had cut the town's electricity supply responsible for pumping water - a typhoid epidemic broke out. Israeli officials later credited the facility with which they conquered the town in part to the effects of the demoralization induced by the epidemic.[50]

Israel's Carmeli forces attacked on May 16 and, after an ultimatum was delivered that, unless the inhabitants surrendered, 'we will destroy you to the last man and utterly,'[51] the town notables signed an instrument of surrender on the night between 17–18 May 1948.

No, war doesn't count. Someone please tell Putin while we're at it.