I.

• Be prepared for anything from your enemy, especially what they seem least likely to do.
• Never let them know your next move. Make things appear to be what they are not.
• Take advantage of Voldemort’s unpredictable moods and choleric-ness. Choleric-ness is not a word, Potter.
• Train in secret. Don’t let V. know how much you know. (Occlumency?)
• Never go into a fight without knowing what you’re getting into and having a plan.

II.

• War is really expensive. Get the Order a sugar daddy. Potter that is inappropriate.
• Take whatever you can from the enemy, making yourself stronger at no cost while also weakening them.
• Avoid long, drawn-out fights, because people will get tired and more likely to make a mistake.
• A long war will wear down on and frustrate civillains. Keep the war brief, not just battles. Shorter war will also mean less lives lost.
• People with a purpose will fight better. (That’s why there’s those old propaganda posters from WWII?) Yes. Phrases like “Keep Calm and Carry On” were meant to encourage the Muggles during air raids. Other posters inspired patriotic pride and reminded the people why their sacrifices were worth it.