The US defined combatant in their latest wars as any male killed over the age of 14, so the ratio is a bit up to how people choose to define combatant vs civilian.
The wikipedia article should be read as a starting point in understanding how extremely unreliable those numbers are, and how much it depend on how people define combatant and civilian.
The wikipedia article should be read as a starting point in understanding how extremely unreliable those numbers are, and how much it depend on how people define combatant and civilian.