The original SPI set is a quad game, containing four battles:
Alma
Tchernaya River
Balaclava
Inkerman
The Decision Games version published in Strategy & Tactics magazine #201 (Jan/Feb 2000) contained only:
Alma
Tchernaya River
Crimean War is a tactical level game on the battles that were fought on the Crimean Peninsula in the mid-1800's. Units are (presumably) companies of infantry, cavalry and artillery. The game has Standard Rules and scenario specific Exclusive Rules. Standard Rules cover the game system and include things like movement, fire combat, melee combat and rallying. Exclusive Rules are special rules that apply to the scenario in question. Each game has one 22" by 17" map and a countersheet with 100 counters.
8 replacement counters for the S&T edition were issued in S&T #212