The World War II Museum, Knitting for Veterans Campaign is a hugh success and still going strongly!  They have new 2008 Scarf Patterns for both knitting and crochet.  Both are in pdf format:

September 2, 2008 - Update - 2008 Scarf patterns 

2008 Knitting Pattern:

http://www.nationalww2museum.org/assets/pdfs/2008-scarf-pattern-knit.pdf

2008 Crochet Pattern:

http://www.nationalww2museum.org/assets/pdfs/2008-scarf-pattern-crochet.pdf

They have 2007 Scarf Patterns for both knitting and crochet, featuring a ”V” for victory on them.  Both are in pdf format: 

2007 Patterns:

2007 V Scarf Knitting Pattern (designed by Lauren Handley)

2007 V Scarf Crochet Pattern (designed by Rachel Vives)

(This post is an Update in honor of Veterans Day. 

 Original post about WWII Museum Knit Your Bit Campaign is here.)

Lion Brand Yarn also has a touching story by a woman who knitted a scarf for this cause.  Her story is here.