[Mobhack]

To see the availability dates for the various armies, see the "Historical Notes" section of the Game Guide. Then either read the write-up for that nation, or refer to the table at the foot of that section.

Also - when using "short timer" nations, you can have problems with selecting dates, if one or more these are set as the selected nations, the date selector will use the earliest date and/or end date of the short-time nation(s) you have selected as upper and/or lower date "stops". (see Game Guide, "Playing a Single Battle", Paragraph on battle date).

Cheers
Andy