Marines never retreat

They shall be my finest warriors these men who give themselves to me like clay I shall mound them,And in the furnace of war forge them they will be of iron will and steely muscle in grate armour shall i clad them and withthe mightest guns will they be armed they will be untouched by plague or disease,No sickness will bught them they will have tacrics,Strategies and machines so that no foe can best them in battle they are my bulwark aginst the terror they are the defenders of humanity they are my Space marines and they shall know no fear