As tall as a 15 storey building Lampreys are Posleen landing ships, packed
with alien troops, linked in clusters of 12 around a Command Dodecahedron
they seperate from the mothership during an assault.
The Legacy of Aldenata series by John Ringo are military sci-fi books
about a near future war in which peaceful aliens enlist mankind's aid
against an overwhelmingly superior alien invader. Equipped with galactic
technology mankind is the only hope of defeating the vicious Posleen.