Over at Monkey Cage, Erik Voeten offers an interesting discussion on the decline in the proportion of Congress members who are veterans and what, according to political science research, this might mean for Congressional foreign policy making:

Frank Lautenberg, who passed away this summer, was the last of 115 World War II veterans who served in the U.S. Senate. To the best of my knowledge, there will be only 12 U.S. senators who have experienced active military service in the 114th Congress. Only one in five members of the current House of Representatives were active-duty military. By contrast, during most of the Cold War, 70 percent of the U.S. Congress were veterans, with the peak coming in 1977 (80 percent).

Does this matter for policy making? There is some research suggesting that it does, most notably the work by Peter Feaver and Chris Gelpi. Feaver and Gelpi establish the following regularities (see especially this book and this chapter-length update):

— On issues that concern the use of force and the acceptance of casualties, the opinions of veterans track more closely with those of active military officers than with civilians.

— The U.S. initiates fewer military disputes when there are more veterans in the U.S. political elite (the cabinet and the Congress).

— The U.S. uses more force in the disputes it initiates when there are more veterans in the U.S. political elite.

— Veterans are less likely to accept U.S. casualties for interventionist uses of force than for “realpolitik” uses of force. [keep reading]

[Graph by Kevin Jefferies http://theweakerparty.blogspot.com/2013/02/no-more-ww2-veterans-in-senate.html]