I'll go through each sentence one by one. For each non-proper noun word, I have to think of three synonyms or similar terms. For example, "game" could be "game|title|application". I need to ensure the synonyms fit contextually. Words like "appeal" might become "appealtoin", but I need to check if they make sense in the sentence.

Next, I'll go through the original text and identify all the words that need to be replaced. Proper nouns are exceptions, so I have to be careful not to alter those. Words like "players," "transported," "continent," etc., should be replaced with three synonyms each.

I need to replace each word with three synonyms. For "Train," synonyms could be "Teach, Hone, Cultivate." "Diverse" might be replaced with "Variety, Assortment, Range." "Units" could be "Troops, Forces, Soldiers." Wait, but should I consider if "units" here refers to military units or something else? In context, it's military, so synonyms like "troops" or "forces" work. "Infantry" and "cavalry" are units, so they should stay as proper nouns? Wait, no, they're not brand names or specific names in this context. The user said to skip brands and names. So infantry and cavalry are just types of units and can be rephrased. Maybe "foot soldiers, horsemen, warriors" for infantry. Similarly, cavalry could be "horseback riders, equestrian, mounted troops."