Literal question
<svar a="all" v="PR00A472 PR00A473 PR00A474 PR00A476 PR00A477 PR00A478 PR00A479 PR00A546 PR00A547"><span class="em">20.b. When did this person serve on active duty in the U.S. Armed Forces? </span>Mark [X] a box for each period in which this person served.<br /><div class="i1">[] April 1995 or later<br /> [] August 1990 to March 1995 (including Persian Gulf War)<br /> [] September 1980 to July 1990<br /> [] May 1975 to August 1980<br /> [] Vietnam era (August 1964-April 1975)<br /> [] February 1955 to July 1964<br /> [] Korean conflict (June 1950-January 1955)<br /> [] World War II (September 1940-July 1947)<br /> [] Some other time</div><br /></svar>