Monday night’s Battle in Boca marked the last time Romney and Obama would appear on a stage together before the election. While the debate, on the campus of Lynn University in Florida, didn’t have the surprising one-sidedness of the first debate or the near-brawl of the second, both candidates came out swinging on foreign policy — and to a surprising extent on domestic policy as well. The auto industry found its place in last night’s chatter, as did the ever-important battleground state of Ohio. But the meme that won the Internet harked back to an era long past, in an exchange on Obama’s reduction in spending on Naval ships. “We also have fewer horses and bayonets, because the nature of our military’s changed,” Obama fired back. Overall, more than 6.5 million tweets were sent during the final debate, according to Twitter. Here are some of the best.