Primary historical sources, as O'Malley's accounts are here, cannot be easily labelled as good or bad. They are the product of their writer and of their time. Errors on the part of the writer are as much of interest to historians as the verifiable 'facts'.
From a literary point of view, however, this volume is very readable and of interest to the historian of the period and the general reader. In particular O'Malley's frustration with his fellow fighters and the fighting system he was working for are interesting points within the works. As well as this O'Malley's work provides a study of the mentality of the people fighting at this period.
Essentially it is a book of 9 short stories (if the account can be called as such) detailing different military actions within the 1920-21 period. With O'Malley's clear and unchallenging style it can be read equally well as 9 distinct historical accounts or as a single work.