Although the role of the camel is diminishing with the advent of technology and modern means of transport, it is still an efficient mode of communication in remote and less-developed areas. The dromedary has been used in warfare since the 2nd century BC. It is particularly prized for its capability to outrun horses in the deserts. Record of its use during the time of Alexander the Great indicate that the animal could cover up to 50 miles per day for a week and they could go for up to a month without water. An account by Aurelian also cited that, in her escape to Euphrates, Zenobia used a dromedary to outrun her pursuers after she was defeated at Palmyra.