That day of the 1st century BC the situation was not at all rosy for the roman legions of Marco Antonio. In the middle of the invasion of Praaspa (located in the Parthian Empire), a party of barbarians ambushed the soldiers of the Triunviro, surrounded them and prepared their bows to throw a chilling torrent of arrows on them. In response, and as related by the historian and chronicler Cassius Dio, the soldiers “formed the turtle, gathering the shields and kneeling on the ground.” The enemies, who “had never seen” a similar combat formation, unsheathed their weapons and charged at that steel castle with bellows.
Bad business. But the legionaries, smaller in number, repelled over and over