History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
We have also discovered the changes in construction that we must make to meet theirs; and against the thickness of their cheeks, which did us the greatest mischief, we have provided grappling-irons, which will prevent an assailant backing water after charging, if the soldiers on deck here do their duty;
since we are absolutely compelled to fight a land battle from the fleet, and it seems to be our interest neither to back water ourselves, nor to let the enemy do so, especially as the shore, except so much of it as may be held by our troops, is hostile ground.
You must remember this and fight on as long as you can, and must not let yourselves be driven ashore, but once alongside must make up your minds not to part company until you have swept the heavy infantry from the enemy's deck.
I say this more for the heavy infantry than for the seamen, as it is more the business of the men on deck; and our land forces are even now on the whole the strongest.