Advance Wars 2: Hard Campaign Ending (Might contain spoilers)

The ending of the hard campaign mode. The only difference between normal and hard is the appearance of Hachi near the end of the talk. CO choices for this mission: Left: Grit Middle: Eagle Right: Sensei (Only read this if you don't mind spoilers of COs skills) Why Grit at the left side? Well, Eagle is a must to complete the mission faster, but left side of the map doesn't have any airports. So I used Grit for indirect attacks for the cannons. Actually I should have used Drake, but that means I cannot use Eagle for the same mission since they are both in the same Army. My only worry for this side is the Neotank. Since my rockets doesn't do much damage to them, at most 30%. Why Eagle in the middle? Actually, middle and right are the suitable choices for Eagle, but then, on the right, the CO has to face the irritating Cannon, the CO at the middle will only have to face the Minicannon. Also, the middle is the nearest to the DeathRay. Also, there are 2 airports near the Cannons for Eagle to spam Bombers. Why Sensei, and why on the right? Since there is an airport on the right side, Sensei's copter tactic can be useful here, his transport units can also travel further for my infantries to reach the missile silo. However, Sturm ALWAYS build AA, which means anti-infantry and anti-air, so I have to build some tanks to block them to bait the AA away from Eagle's units. Final tactic: Prepare 2 UNDAMAGED bombers from Eagle and place them at (up to) 14 grids away from the minicannon which blocks the path to the death ray, and the other at (up to) 14 grids away from the Deathray (Make sure both units are not blocked by any units). Store your super power until the tactic above is ready. This is the easiest way to win this mission, since there are NO enemy HQ to capture.