Final answer:
Gentleman’s warfare involved formal battles; militia warfare used guerrilla tactics.
Step-by-step explanation:
The difference between gentleman’s warfare and militia warfare in the Revolutionary War is that gentleman’s warfare involved formal battles, while militia warfare used guerrilla tactics. Gentleman’s warfare is characterized by organized and structured battles, often fought by professional soldiers. On the other hand, militia warfare employed citizen soldiers who used unconventional tactics like ambushes and hit-and-run techniques to fight against the British forces.