First civilizations - common factors?

[Pannonian]

Proof of chimp power. They weigh 30-40kg yet are strong enough to beat this guy even if this particular one hadn't bitten him. Humans are weak compared to chimps. Yes even 1v1 as you can see.

The little war I have mentioned is not so much human in that they act like us, but the way they march, the silence, the awareness and most importantly the intent in their eyes, that all makes them pretty scary. Organized attacks are war.

Was the incident you talked about the one shown in Cousins? If so, they start off by beating the buttresses on local trees to gee themselves up (I've seen footage of US marines doing similar before a patrol), then are silent throughout the patrol until they reach the target. Some jumpiness at the start, but their movement become more deliberate as they near the borders until they form the regular column seen in the pictures. Once they reach the ridge that borders their territory, they sit in a line, scanning the valley below, still silent. When they spot something, they move off in column towards where they saw the movement. When they get there, they sit and wait and watch. Chimp comes down, fight follows.

Dolphins are supposed to indulge in even larger scale wars, but it's harder to describe their tactics in human terms, as terrain is not much of an issue, and they are too agile to follow clearly. I've certainly seen footage of two schools clashing.