The Llamamen Imperial Army of Invasion's Organization

The llamamen sort of think that defending is a bad thing, so they do not have defense forces at all (except for the low-ranking auxiliaries). 

The three forts they have on the Squirrelman border are actually mobile large battle stations, the size of small planets, and they can hurl them across the subspace stream to wreak havoc in their enemy's infrastructure.

Further, they don't have an army and navy branch, the corps commander rules over both and they are basically in the same army structure.

Emperor (CIC)

Marshal of the Empire of the Army of Invasion

    Chief Adjutant

Guard Corps Marshal

    Imperial Guard General Major

    Space Arm General Major

    PLAF (Planetary Landing Assault  Forces) General Major

1st Corps Marshal

    Space Arm General Major

    PLAF (Planetary Landing Assault  Forces) General Major

2nd Corps Marshal

    Space Arm General Major

    PLAF (Planetary Assault Landing Forces) General Major

3rd Corps Marshal

    Space Arm General Major

    PLAF (Planetary Landing Assault  Forces) General Major

4th Corps Marshal

    Space Arm General Major

    PLAF (Planetary Landing Assault  Forces) General Major

Auxiliary Corps Marshal

    Space Arm General Major

    PADF (Planetary Assault Defense Forces) General Major

   Invasion Fortress Line General Major