Scholars and policymakers warn that with rising affective polarization, politicians will find support from the public and permission from military professionals to use military force to selectively crack down on political opponents. We test these claims by conducting parallel survey experiments among the US public and mid-career military officers. We ask about two hypothetical scenarios of domestic partisan unrest, randomly assigning the partisan identity of protesters. Surprisingly, we find widespread public support for deploying the military and no significant partisanship effects. Meanwhile, military officers were very resistant to deploying the military, with nearly 75 percent opposed in any scenario. In short, there is little evidence that public polarization threatens to escalate domestic disputes, and strong evidence for military opposition.