After I wrote that, I recalled catbox.moe being slower or not availiable without a vpn, and that’s where many videos are posted before embedding or reuploading. Other than that, there’s still Telegram where most of these originate, and it’s not limited, in part because that’s where our ‘milbloggers’ post too. Finding /r/combatfootage and such seems less likely than finding this content in the social network almost everyone uses on the daily basis.