Storm winds snap and roar due to the rigging, flying flags stretched taut, their hues fierce opposed to a slate-gray sky

https://marcoxemn908.oakmontscope.com/posts/regiment-via-regiment-a-look-at-unique-flags-from-the-revolutionary-war

Storm winds snap and roar as a result of the rigging, flying flags stretched taut, their colours fierce towards a slate-gray sky.