Just a quick link to this Atlantic article. It features several works by political scientists on why and when the public is likely to support military action. Complete with graphs and everything.
*Picture taken from the aforementioned and linked Atlantic article.
Michael Flynn is a professor in the Department of Political Science at Kansas State University. He received his Ph.D. in Political Science from Binghamton University in 2013. His research focuses on the political economy of foreign policy with a specific focus on security cooperation and military deployments.