Walz and Vance's military histories will likely come up during the debate. Their similarities, though, don't stop at their willingness to serve. Both candidates enlisted as teenagers, used G.I. bills to attend college and neither saw combat.

Tonight's VP debate between Vance and Walz is expected to highlight and contrast their respective military service.

When Republican JD Vance and Democrat Tim Walz collide in a vice-presidential debate next week, both will seek to fill in the basic sketches that the American public has seen of them so far while also making the case for their respective presidential nominees, Donald Trump and Kamala Harris.