Who wrote 'Beau Geste'?

Beau Geste is an adventure novel by P. C. Wren, which details the adventures of three English brothers who enlist separately in the French Foreign Legion following the theft of a valuable jewel from the country house of a relative. While written in 1924 the novel is set in the period before World War I. It has been adapted for the screen several times.

The original novel, on which the various films are more or less loosely based, provides a detailed and fairly authentic description of life in the pre-1914 Foreign Legion, which has led to (unproven) suggestions that P. C. Wren himself served with the Legion. Before he became a successful writer Wren's recorded career was that of a school teacher in India.

P.C. Wren wrote the sequels Beau Sabreur and Beau Ideal.