It was an easy read and an interesting concept. However, you had to ignore some of the issues that having the tanks would have resolved as far as food and such. Lots of action but most of it was NOT military. Very very imaginative and fun. Lots of discussion about having sex without any details about who touched who where. Some nudity discussed.
Leo Frankowski, author of the popular Conrad Stargard series, postulates a future in which the former Yugoslavia is still torn by civil war between Serbs and Croats. But now they've taken their endless conflict to space, and wars between minority factions are fought by starving workers symbiotically bonded with Mark XIX Main Battle Tanks. These sentient tanks provide for all their human pilots' needs (and we do mean all their needs).
Our hero, Mickolai Derdowski, is a Polish Kashubian who chooses to be inducted into the Croat branch of the army and bonded with a sexy female tank in lieu of being reduced to his organic components and used as fertilizer in the hydroponic vats. The real forces behind the war are the Tokyo Mining and Manufacturing Company, which makes money off the hapless Kashubians unfortunate enough to have colonized a brutal, barren metallic hunk of a planet, and the Wealthy Nations Group, which squeezes water from turnips all over the galaxy.
Like most military SF, the lighthearted Boy and His Tank is full of guns, girls, and galactic adventure, and Frankowski throws in a surprise ending that will make you either laugh or cry. --