1. Why are soldiers “not as other men” according to Keegan?

It is because the way of life of the soldier can never be that of civilization itself.

Explanation:

War is entirely not normal for discretion or governmental issues since it should be battled by men whose qualities and aptitudes are not those of legislators or representatives. They are those of a world separated, an extremely old world, which exists in corresponding with the ordinary world yet doesn't have a place with it. The two universes change after some time, and the hero world adjusts in sync to the non military personnel. It follows it, nonetheless, a good ways off. All civilizations owe their beginnings to the soldier; their societies sustain the champions who shield them.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

herodotus taught this. herodotus was an ancient greek historian who was born in halicarnassus in the persian empire. he is known for having written the book the histories, a detailed record of his "inquiry" on the origins of the greco-persian wars.