The first of Josephus' works was originally written in Aramaic in the early 70's to warn Syrian Jews that it was futile to join the revolt against Rome. After the war an expanded version was translated into Greek by professional scribes (75-79 CE). Neither Aramaic edition survived. Historians generally consider the Greek translation the best work of Josephus as a source for historical information about the Jewish revolt, since it  is less apologetic than his other works & was drafted before the end of the war, while details & eye-witness impressions were fresh in the author's mind.

[in Loeb Classical Library: Josephus vol. 2-3].

For full text of older editions see:

• War of the Jews - William Whiston's 1737 English translation [Internet Sacred Text Archive]. This version is mirrored on many websites including: Christian Classics Ethereal Library (Calvin College), Wesley Center for Applied Theology (Northwest Nazarene U), Early Jewish Writings (Peter Kirby). All preserve division into chapters rather than the standard paragraph numbering used in modern scholarly citations.

• De Bello Judaico - B. Niese's 1895 critical edition of the Greek text [Perseus Digital Library].