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AWACS Snake Pit provides the player with ESM during missions in Ace Combat 6: Fires of Liberation

Electronic Support Measures (ESM) is a type of electronic warfare used to support allied units. It is featured in Ace Combat 6: Fires of Liberation, Ace Combat Infinity, and Ace Combat 7: Skies Unknown.


Ace Combat 6: Fires of Liberation

In Ace Combat 6: Fires of Liberation, ESM is provided by allied units such as radar vehicles, radar facilities, AWACS, and some naval ships. When player or other friendly aircraft enter the effective range of friendly ESM, which is marked by a pulsating blue circle on the radar, their missiles' homing capabilities and rate of fire will increase.[1] The effectiveness is indicated by the ESM level at the bottom right corner of the HUD.

On the other hand, enemy units can also deploy units to boaster their own combat capability. Hostile ESM are indicated by red pulsating circles on the radar, and can be neutralized by destroying the unit emitting the said ESM.[2] In Ace of Aces difficulty, enemy ESM can also lower the player's ESM level below zero (down to a minimum threshold of two), decreasing missile's effectiveness. Special weapons are not affected by enemy ESM.[3]

Ace Combat Infinity

In Ace Combat Infinity, ESM is available as a special weapon. Its sole function is to increase the player aircraft's maximum range for Tactical Datalink for a certain amount of time.

Ace Combat 7: Skies Unknown

The ADFX-01 Morgan, CFA-44 Nosferatu, F-2A -Super Kai- and XFA-27's Integrated Electronic Warfare System simultaneously provides both functions of the ECM and ESM when activated, with the latter boosting missile homing and range for the user and other friendly aircraft nearby.

In Unexpected Visitor, friendly EA-18G Growlers provide ESM support over an area. Missile type weapons gain increased firepower, homing capability, and rate of fire under the influence of friendly ESM, which is indicated by a blue circle on the radar.

Game Analysis

Ace Combat Infinity

ESM Infinity Icon.gif
"A special weapon that relays tactical data signals from allies in the vicinity.
It increases sensitivity to signals from allies for a brief period of time, allowing datalink to be received over a wide area."


Lv.1 2 F F F F F D 0
Lv.2 12 F F F F F D+ 16,280
Lv.3 18 F F F F F D+ 63,360
Lv.4 38 F F F F F D+ 248,600
Lv.5 56 F F F F F C 542,300
Total Credit Price from Lv.0 to Lv.5 870,540