The part of the sentence that tells "who" or "what" the sentence is about is the subject.
Answer:
There came a point in the transmission of the concept of the Light Brigade, however, ... over six hundred cavalrymen rode at an emplacement of active Russian guns ... of War by David D. Perlmutter (1999), are all analyses of military paintings ... until they reached the batteries of the enemy, and cleared them of their gunners,.
Explanation:
It was a transformation of human life circumstances