Icebreaking capability is for sure a different issue - but a rather special requirement for warship. I do not know many warships with icebreaking capability. There are some dedicated icebreakers, which are armed; the Danish navy has some patrol ships with limited icebreaking capabilities (Thetis and Knud Rasmussen class; but not with bows with much flare either!) and probably the Finnish and Swedish navies have a larger number of ships with icebreaking capabilities.
See e.g. the Finnish minelayer Uusimaa (there is not very extensive flare at the bow)