You can find the CoLoW replication data for the following publication via the menu on the left (see "Downloads"):

Chojnacki, Sven/Herchenbach, Maurice/Reisch, Gregor 2009: Perspectives on War. Disentangling Distinct Phenomena: Wars and Military Interventions, 1990-2008, in: S+F Sicherheit und Frieden/Security and Peace 27: 4, 242-251.

The entire issue is available for (free) download here.

The coding for the variable "WarType":

1 = Inter-state Wars
2 = Extra-state Wars
3 = Intra-state Wars
4 = Sub-State Wars

For further information regarding definitions etc. see the above mention article.