There is a long-standing controversy in Greek History about whether the othismos, or ‘push’, of the hoplite phalanx mentioned by classical authors was real or metaphorical. Experimental archaeology – structural and finite element analysis with both physical reconstructions and computer modelling (presented non-technically here) – suggests that the archaic Greek hoplite panoply of bell cuirass, Corinthian helmet, and large bowl-shaped shield (aspis), which seems at first to present contradictory design choices, in fact offered important mechanical advantages under compressive force; that cuirass, helmet, and shield were designed or evolved to work together to allow the Greek warrior to survive and fight in a pushing mass of men without being crushed or asphyxiated. The hoplite othismos was, then, real and was presumably practised from the earliest era to which this equipment can be dated, the late eighth century bc.