OK, I don't think I've ever seen this one posted here, so here it goes:
Notes of a Lost Pilot
by Jean Beraud Villars
translated by Stanley J. Pincetl, Jr. and Ernest Marchand
Here in the U.S. about the only first hand accounts of the air war we can easily access are those of the pilots that flew for Great Britain and her dominions across the seas or those translations of German pilots. With the exception of accounts of the Lafayette Escadrille/Lafayette Flying Corps, I always thought this a shame that French accounts were as rare as they were. So far, this is the only one I've run across. I found it a very enjoyable read. Villars, a recon and then pursuit pilot, wrote it during the war, and published a heavily edited version in 1918 under a pseudonym, and for obvious reasons. His account is very damning of the French command, their decisions, etc.
FWIW,
Warren