We've got three bodies: captain, standardbearer and musician and three heads that should be interchangeable with eachother as well as with those of the infantry set. The captain and standardbearer get some further options for customisation.
The musican is a pretty traditional design, a drummer, 'nuff said.
The standardbearer has three different standard options, two of which reflect the design of the captain's shields. These should fit without much difficulty on the bodies of the first infantry set (WKD-01) if you like more variety and the halberds and pikes from that set should fit on the standardbearer's body, turning him into a pretty good captain or sergeant figure.