The most one usually hears about the Hungarian and Romanian allies of Germany is that they were poor and unreliable, more a liability than an asset, in Germany's quest for lebensraum on the Ostfront. So it's refreshing to encounter a book that looks at the subject from the Hungarian perspective.
Martinez seems impressed by the fact that Hungary was able to supply itself with its own materiel, despite the fact that it was never either good enough in itself, or sufficient to the tasks in hand. I.e. it was hopelessly outclassed by the Russian forces it was up against. This pretty inevitably lead to the Hungarian armed forces being re-equipped, to some extent, with German gear.
Tragically for Hungary, once part of the formerly great Habsburg empire, the combination of their own poor materiel, and the insufficient quantities of better German gear, added up to a hopeless situation. Plus they were now fighting nervously alongside Romania, a long-term enemy who had, like them, thrown in their lot with the Nazis.
I feel I learned a good deal reading this, and became better acquainted with Hungary's own materiel, which is very interesting. I'd definitely recommend this to anyone interested in this aspect of the enormous war on the Eastern Front.