It is AD 43. You have heard that a Roman army has arrived but you don't know how strong it is. You have to decide whether to offer any resistance or beat a retreat. It all depends on you quickly working out how strong the soldiers are. You take up a position close to one of the legions of the Roman army where you can't be seen. You have to quickly establish as much as you can about the equipment they carry. To do this you need to make a quick sketch. But you mustn't be seen, so you have to work in small teams of just four.