4 Words to use with invader

I found the happiest contrivances against the universal invader fail.

As heir to Julius, she may pretend A second time to make this island bend; But Portsmouth, springing from the ancient race Of Britons, which the Saxon here did chase, As they great Cæsar did oppose, makes head, And does against this new invader lead.

But the citizens, alarmed at the danger, and firmly united among themselves, made a bolder defence than the cowardice of the nobility and gentry gave the invaders reason to apprehend; and the besiegers, after suffering the greatest hardships, were finally frustrated in their attempt.

The mouth of the cave was small, and no sooner did the invaders rush in than they were cut down by those inside; in vain were more men thrust in to take the place of those slain; the advantages of position were too great, and they were obliged at length to desist.

4 Words to use with  invader