Assaulting the Perimeter

Grenada Reconquest- Pyrenes, 3rd moon of Grenada- Pyrenes campaign- Despite heavy casualties the forces of Mars pushed back the heretech forces of the Dark Mechanicus all the way to their central base.  There followed a brutal assault upon the perimeter of the facility with neither side backing down or showing any quarter.  finally after more horrendous losses the perimeter fell to Imperial forces.