Origin of War
The common factor of early warfare is bronze weapons:
Excavations at Mersin, Anatolia show the presence of fortifications and soldiers' quarters by 4300 BC.
Excavation work undertaken in 2005 and 2006 has shown that Hamoukar was destroyed by warfare by around 3500 BC-—probably the earliest urban warfare attested so far in the archaeological record of the Near East. Continued excavations in 2008 and 2010 expand on that.