In 1942 the U.S. War Department produced a comic strip entitled How to Spot a Jap.  It was a part of 75 page booklet called a Pocket Guide to China.  It was handed out to U.S. Army and Navy soldiers stationed in China during World War II.

The comic strip was removed in subsequent printings of the pocket guide starting in 1944.

You can read the full comic at http://www.ep.tc/howtospotajap/howto01.html.

Thanks for http://www.ep.tc/ and it’s amazing collection of these fantastic nuggets of history.