Introduction
Slightly slower than Iron Man he has many of the same moves and infinites. He is able to perform as a good assist and rarely is ever not an assist. Learn to land his Triangle Kick and you're on the right path.
Origins: Marvel Vs. Capcom
Other Appearances: Marvel Vs. Capcom 2
Colors
First row: LP, HP, A1. Second row: LK, HK, A2.
Moves List
Normal Moves
Command normals
Shoulder cannon: c. hp
Knee dive (aironly): d + hk
Upkick (aironly): u + hk
Laser (aironly): f + hp
8-way air dash
Special Moves
Shoulder Cannon
qcf + p
airok
Low Shoulder Cannon
qcf + k
Smart Bomb
b or f + lk + hp
airok
Repulsor Blast
hcb + p
Flight
qcb + k
N/A
airok Perform again to unfly. You can't block while flying.
Super Moves
Proton Cannon
qcf + lp + hp
War Destroyer
qcf + lk + hk
Assist Moves
Name
Damage
Cross-Over Combination
Alpha Counter
Notes
Shoulder Cannon Proton Cannon
Shoulder Cannon 
Repulsor Blast War Destroyer
Repulsor Blast 
Smart Bomb War Destroyer
Smart Bomb
The Basics
War Machine has better Smart Bombs, but is generally discarded in favor of Iron Man. One of the few consistently played teams with War Machine is Iron Man/War Machine/Doom.