John Wilkens points out something I hadn't realized: "It's the first time in 80 years that there are no veterans on either major-party ticket for the White House. The last time it happened, in 1932, Franklin D. Roosevelt defeated Herbert Hoover."
And even then, FDR had served as assistant Navy secretary, leading him to identify with that service even years later. I recall reading somewhere that he used to tease George Marshall by referring to the Navy as "us" and the Army as "them."
Thomas E. Ricks covered the U.S. military for the Washington Post from 2000 through 2008.