Final answer:
Alexander's troops did not protest significantly when Persian POWs were added to the army as Alexander aimed to unify Greek and Persian forces under his rule.
Step-by-step explanation:
When Persian POWs were incorporated into Alexander the Great's army, his own troops responded by accepting the decision without major protest. This can primarily be attributed to Alexander's general approach to conquered peoples and his strategic integration of local forces into his own ranks. Throughout Alexander's conquests, he made a point of offering alliances and concessions to Persian subjects who surrendered, incorporating them into his military and administrative apparatus.
This was part of his broader strategy to unify Greek and Persian civilizations and ensure a stable rule over his expanded empire. By doing so, he sought to fuse together the Greek and Persian societies, treating Persian soldiers and nobles with respect, and therefore, his own troops were likely to follow this example and accept the additional manpower without significant protest.