Creator/LeoFrankowski's last Science Fiction Series. Although 6 books were planned 3 were published before Leo Frankowski [[AuthorExistenceFailure passed away]]: the first ''A Boy and His Tank'' (1999) set up the series, the second ''The War with Earth'' (2003) defined it, the third ''Kren of the Mitchegai'' (2005) introduced the universes BigBad, the next was planned to be their first major conflict, followed by the long hard war, ending in a epic resolution.

It should be noted that for 2/3rds of the series LF coauthored with Lieutenant Colonel Dave Grossman.

!!The Series contained examples of:
* {{BFS}}: [[IncrediblyLamePun Armed tanks]] with big fancy [[KukrisAreKool kukris]].
* CannibalismSuperpower: Aliens [[EatsBabies eat babies]] for [[LifeDrinker youth]] and [[BrainFood learning]].
* ColdSniper: This series weapons are so powerful that one needs armor to protect against ones own guns OneHitKill for everything else.
* CoolTank: Overlaps with HoverTank, although with the proper [[MechaExpansionPack add-ons]] the "tanks" could [[ISOStandardHumanSpaceship fly in space]].
* {{Cyberspace}}: How your tank is run ... it generates problems later.
* DistantFinale: The interspaced narration by humanities successors [[spoiler:{{Uplifted Animal}}s]]
* HoverMecha: Humanity's tanks find arms to be incredibly useful and since they levitate on magnetic bars the net result is this trope.
* IKnowYouKnowIKnow: LawfulEvil life on a Michegai "Grass Planet" can get complicated.
* InertialDamping: Via [[IncrediblyLamePun inertial dampening fluid]].
** Mitchegai ships can turn inertia off leading to some nifty maneuvering, not quite a ReactionlessDrive but used as an alternative to DeflectorShields.
* LensmanArmsRace: The series starts of pretty spectacular, and then gets more impressive with sequential books.
* MultipurposeMonoculturedCrop: Mitchegai "Grass Planets" can synthesize anything they need artificially [=and/or=] by using their "grass" or [[HumanResources their peoples]].
* MundaneUtility: A number of examples throughout the series hyper-advanced thought controlled tanks with strong AI lead to massive reduction of training and logistical footprints with some off the shelf software, having built in full time {{autodoc}} systems lead to a holistic cure for cancer, having advanced spacesuits gathering dust lead to the reinvention of armored warfare, etc.
* OurWormholesAreDifferent: Similar to Franchise/{{Stargate|Verse}} there needs to be two points to travel, however if you have good enough computers one of those points can be moving, and since your rockets don't need to carry their own fuel anymore you can go quite fast.
* PowerFloats: Via intense magnetism the tanks even have little bars that act as treads.
* RemoteBody: The hero spends most of the second book as the controller for a telepresence human-ish robot.
* RocketJump: The [[FightingAShadow [=RC=] humanoid drones]] have this [[RocketBoots built into their legs]].
* SapientTank: Commanded by a BadassGrandpa or [[NeverMessWithGranny Grandma]].
* SingleBiomePlanet: The Mitchegai absolutely sterilize planets having just one animal (themselves) and one plant leading them to form several thousand "Grass Planets" via Terraforming.
** New Kashubia itself used to be a gas giant, after a local supernova however, it has been rendered into a concentric sphere of different metals, which was great for manufacturing but sucky for anything else.
* StarfishAliens: Two types ShapeShifting Crabs and ExplosiveBreeder [[TheReptilians lizards]].
* SpaceshipGirl: Tank girls and boys InSpace thank you very much.
* SuperReflexes: Combat Speed is a new development on the [=VR=] front, it makes for very neat tanks.
* {{Terraform}}: Several human planets and all Mitchegai planets.
* WeaponizedExhaust: Mentioned in passing.