Weapons Base Assault

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For the HARD version of this mission, see Weapons Base Assault (HARD).

Weapons Base Assault is an Online Co-Op Missions mission in Ace Combat Infinity. It takes place in Iyuli, Russia.


An enemy weapon manufacturing base in the vicinity of Iyuli, a site we previously raided, has commenced operations again. Analysis of aerial photography indicates that the enemy has already reformed military defenses, and Command has determined that a well planned invasion operation must be initiated as quickly as possible. All pilots should prepare carefully, and then wipe out the weapon manufacturing base and the forces defending it without further delay.


Alpha Team will spawn where Bone Arrow Squadron spawned in Rescue, while Bravo Team will spawn over the bay where Stonehenge's first strikes occurred in the same mission. A heavy concentration of ground targets, exclusively including weapons bays and arsenals, will appear along with a minor aerial force.

After all forces have been destroyed or three minutes have elapsed, whichever comes first, a Mission Update of some sort will commence. Following a successful completion of the Mission Update, more enemy units will spawn. There are two possibilities at this point: a heavy concentration of ground targets clustered together (ideal for Unguided Bombs), or a moderate concentration of ground targets coupled with a heavy concentration of aerial targets.

S Rank

Project Aces demonstrating an S Rank

Like in other Online Co-Op Missions, achieving an S Rank on Weapons Bay Assault requires the destruction of all enemy units. This is made easier with a quick completion of the Mission Update, whichever it happens to be.

Odds are in favor of a majority of ground targets in this mission, which means, in an 8-person room, at least 4 players should concentrate on ground assault. However, at least one or two people should focus on the air, since there will still be air units no matter what happens, and the chance of a heavy concentration of enemy pilots after the Mission Update is not a slim one.

One possible occurrence is that a couple of the enemy pilots will fly to the corners of the combat zone. Therefore, any pilots focusing on air supremacy may find it in their interests to use parts or an aircraft suited for attaining high speeds to cross the radar quickly.


E or D Rank

While the attack on the enemy facility cannot be called anything resembling a success, some damage was caused to the enemy's defensive capabilities. In light of this, Operations HQ is already planning a repeat mission.

C or B Rank

The operation has temporarily halted operation of the enemy facility, but it will soon be running again. Operations HQ is evaluating the requirement for a repeat mission in order to completely destroy their production capabilities.

A Rank

The operation was able to partially cripple the production capabilities of the facility. This will likely allow our upcoming operations to go more smoothly.

S Rank

Your swift action has once again laid waste to the enemy weapon manufacturing base. It will take them a long time to recover and rebuild again.



  • This mission contains a huge concentration of enemy forces, seemingly more so than other Online Co-Op Missions.