The exact contents of a Force Pack varies by faction and sub-era, a French Corps d’armée for the Early War isn’t identical to one in the Late War. But every Force Pack is a fully playable ESR Force for a player to command.
Here’s an example of what is available in the French Mid-Late War Force Pack: Corps d’armée available for Pre-Order today.
(Go here to see what is in a Russian Pehotniy Korpus Force Pack.)
6
Ten figure Battalions of Infanterie Légère
18
Ten figure Battalions of Infanterie de Ligne
2
Twelve figure 6-pdr Batteries of Artillerie à Pied with Train
2
Twelve figure 6-pdr Batteries of Artillerie à Cheval with Train
2
Two figure Engineer Companies of Sapeurs
1
General de Cavalerie Légère
4
Four figure Squadron Groups of Chasseurs à Cheval
3
Assorted Reformation Areas that may include various wagons, caissons, field forges, and other Train and Equipage vehicles

1
Random historical Force Commander

3
Formation Stat Cards

6
Assorted Objective Markers (four objectives, two dummies)

8
Directive (6) and Status (2) Cubes

28
Flags

45
3mm Thick Laser Cut MDF Bases

1
Quick Reference Guide