In ancient Greek army, they had a death penalty for losing your shield, the same as desertion. There was no such penalty for losing your helmet or armor. Why ?

In ancient Greek army, they had a death penalty for losing your shield, the same as desertion. There was no such penalty for losing your helmet or armor. Why ? Because they fought in a phalanx, and a soldier losing his shield endangered not only himself, but also his companion on the left. Fun fact: all Greek troops were named after the type of shield they used. Source: https://acoup.blog/2020/03/17/new-acquisitions-hoplite-style-disease-control-march-17-2020/ https://acoup.blog/2020/03/17/new-acquisitions-hoplite-style...