Traits incorrect, please repair for card searching and deck creations purposes. Thank you.
Also this requirement for 200 character reviews is obnoxious, I just wanted to advise your staff that this database is flawed and assist where possible.
Avenger. Soldier.
Locked and Loaded - Response: After you change to this form, place 5 ammo counters on War Machine.
S.H.I.E.L.D. Soldier.
Action: Choose a War Machine card in your discard pile and shuffle it into your deck.
Forced Response: After you change to this form, discard each ammo counter from your identity.
Traits incorrect, please repair for card searching and deck creations purposes. Thank you.
Also this requirement for 200 character reviews is obnoxious, I just wanted to advise your staff that this database is flawed and assist where possible.
War Machine is one of my favorite heroes (maybe even my favorite hero) !
He needs quite some time to set up so include cards to thwart and tank (allies, boost to your defence or heal).
Aspect
Agression is the least interesting I think, he's already capable to deal a lot of damage.
Leadership is always interesting, Iron Man is a good signature ally to abuse with this aspect (Make the Call for example) and chump blocking is useful/necessary until you get Upgraded Chassis !
Protection is nice to defend every turn until you are ready to counterattack. Don't over invest in defence events though as you still want to find your key supports/upgrades pretty quick. Upgrades like Energy Barrier or Forcefield Generator are really good (but quite expensive) because they protect you AND can be discarded in place of your other precious upgrades later on.
Justice is by far my favorite. He synergizes very well with the S.H.I.E.L.D suits (Agent 13, Field Agent and Helicarrier) as his AE and Munitions Bunker are both S.H.I.E.L.D !
You'll need a lot of thwarting to make for all the times you will change form (to replenish your ammos !)
Main strategy
Survive until you've played Upgraded Chassis (to take most hits), your 2 Gauntlet Gun and your Shoulder Cannon. Crew Quarters will help you survive while you swap form every turn.
Play your Hero events when you can and replenish your ammos by using your Gauntlet Gun ability (even if you can't use the ressource you can still add 1 ammo when paying for other cards ;) ).
Full Auto is the best event you have and will destroy the villain and his minions quickly. When in AE just shuffle this on your deck if you can reliably pay for it (Gauntlets...). If you play a heavy-Supports/Upgrades/Allies deck, you will cycle your deck quickly by the end and you'll be able to often draw at least 1 Full Auto per turn !
Whenever you have ammo in excess before changing your form, just unload everything in your Shoulder Cannon and Missile Launcher.
Notes
Enjoy :)