The author is a highly decorated Soviet weapons designer, having designed, among other things, the cannon carried by the most successful tank of all times - the T-34, and several of the field artillery pieces used most extensively by the Red Army during the WW2. His book is a tale of technical and organizational challenges successfully overcome by the author and his team, but also one of an uphill struggle with people who objected to his methods of work and his views on the future of artillery (i.e., the wrongdoers). The book, even though full with artillery jargon (almost never explained) and of the period-relevant discussions in the context of the role of the party (meaning - the communist party) in all aspects of life, and even despite the periodic relapses of the author into the tenets of the Soviet ideology (Finns are the ones who started the Winter War according to Grabin), is nevertheless a fascinating read, of interest both to hardcore weapons buffs and to technical geeks, interested in learning about how one creates a highly successful design and implementation operation from thin air, despite strong resistance from the superiors and, sometimes, from one's peers (reminiscent to the similar feats in the modern corporate environment).
The book describes work of a military R&D department (artillery). Lean design, ergonomics (before the term actually appeared) and usability applied in early 50-s - so strange to read it nowadays.