Easy . . . look at the basing. Murdock uses thin bases while I use thick ones. Furthermore he uses thinner dark-coloured pikes while I use thicker light-coloured ones (see below):
|Parliamentarians -- thin bases & dark thin pikes|
|Royalists -- thick bases & light-coloured thicker pikes|
A similar basing system is used for the cavalry so hopefully this will help keep the sides clear as you try to follow our upcoming Edgehill battle.