This is the World War II extra units pack originally hosted on the Firaxis website. These were included in the Play the World expansion, but did not carry over into Conquests. Icons are already present in the Conquests units32.pcx; a collection of official and third-party PediaIcons can be downloaded here. To install, copy the 'World War II' folder to Civ3PTW/extras.
Included in this pack:
American Anti-Tank Soldier
American Heavy Machine Gun Team
German Anti-Tank Soldier
German Heavy Machine Gun Team
See this pack for vehicles.
PTW WWII Unit Pack 1 2016-10-05
PTW WWII Unit Pack 1