"Originally Posted by Polybius, Histories, book 18, chapter 30
Now in the case of the Romans also each soldier with his arms occupies a space of three feet in breadth, but as in their mode of fighting each man must move separately, as he has to cover his person with his long shield, turning to meet each expected blow, and as he uses his sword both for cutting and thrusting it is obvious that a looser order is required . . ."

Oh. Well, thanks.