Why is Frederic Henry's change in perspective about the war significant to the storyline?

wheres the following authors?

the economic activity signified in that scenario is a. production

in general, market production makes reference to the elaboration of a product or service which is destinated for economic purposes (to be sold) at money-price in a market. such product or service has to be principally tradable for money.

there is no money exchange involved in distribution, generalized reciprocity or balanced reciprocity.

it provides a unique and personal perspective on a significant historical event.

macbeth is my cousin wowww