Premise: The phalanx ( φάλαγξ plural phalanxes or phalanges , φάλαγγες , phalanges ) was a rectangular mass military formation , usually composed entirely of heavy infantry armed ] s , pikes , sarissas , or similar weapons . The term is particularly ( and originally ) used to describe the use of this formation in Ancient Greek warfare , although the ancient Greek writers used it to also describe any massed infantry formation , regardless of its equipment , as does Arrian in his Array against the Alans when he refers to his legions . In Greek texts , the phalanx may be deployed for battle , on the march , even camped , thus describing the mass of infantry or cavalry that would deploy in line during battle .
Hypothesis: The phalanx describes the mass of infantry that would deploy during battle and it is significant in military history.
Label: ENTAILMENT