The Institute for Operations Research and the Management Sciences (INFORMS) has awarded the 2004 Frederick W. Lanchester Prize to Lex Schrijver. Schrijver, leader of CWI's Probability, Networks, and Algorithms cluster, received the award on October 25, 2004 at the INFORMS Annual Meeting in Denver. The Lanchester prize is awarded for the best contribution to operations research and management sciences published in English. It includes a commemorative medallion and a cash award. Schrijver earned the prize for his book 'Combinatorial Optimization -Polyhedra and Efficiency', published in 2003 by Springer Verlag. It is the second time Schrijver wins the Lanchester Prize. In 1987 he received the award for his book Theory of Linear and Integer Programming. More information can be found on PNA1 (http://www.cwi.nl/pna1), Springer online (http://www.springeronline.com/sgw/cda/frontpage/0,11855,4-40109-22-2250233-0,00.html) or INFORMS (http://www.informs.org/Prizes/LanchesterDetails.html).