The last major action of the army came in 1848 when Price , recently promoted to the rank of general , invaded the state of Chihuahua .
The last major action of the army defeated a Mexican force at the Battle of Santa Cruz de Rosales .
The last major action of the army came in 1848 when Price , recently promoted to the rank of general , invaded the state of Chihuahua and defeated a Mexican force at the Battle of Santa Cruz de Rosales .