diff --git a/src/services/conquestService.ts b/src/services/conquestService.ts
index 16f20041..0a29341c 100644
--- a/src/services/conquestService.ts
+++ b/src/services/conquestService.ts
@@ -429,9 +429,6 @@ export const getMissionTypeForLegacyOverride = (missionType: TMissionType, conqu
         return "EndlessCapture";
     }
     let str = missionType.substring(3, 4).toUpperCase() + missionType.substring(4).toLowerCase();
-    if (str == "Extermination") {
-        str = "Exterminate";
-    }
     if (str == "Artifact") {
         str = "Disruption";
     }
@@ -440,3 +437,31 @@ export const getMissionTypeForLegacyOverride = (missionType: TMissionType, conqu
     }
     return str;
 };
+
+export const factionToInt = (faction: TFaction | "FC_TENNO"): number => {
+    switch (faction) {
+        case "FC_GRINEER":
+            return 0;
+        case "FC_CORPUS":
+            return 1;
+        case "FC_INFESTATION":
+            return 2;
+        case "FC_OROKIN":
+            return 3;
+        case "FC_RED_VEIL":
+            return 4;
+        case "FC_SENTIENT":
+            return 5;
+        case "FC_NARMER":
+            return 6;
+        case "FC_MITW":
+            return 7;
+        case "FC_SCALDRA":
+            return 8;
+        case "FC_TECHROT":
+            return 9;
+        case "FC_DUVIRI":
+            return 10;
+    }
+    throw new Error(`unexpected faction ${faction}`);
+};
diff --git a/src/services/worldStateService.ts b/src/services/worldStateService.ts
index fb6cbea5..c8c1181f 100644
--- a/src/services/worldStateService.ts
+++ b/src/services/worldStateService.ts
@@ -41,7 +41,7 @@ import type {
 import { toMongoDate, toOid, version_compare } from "../helpers/inventoryHelpers.ts";
 import { logger } from "../utils/logger.ts";
 import { DailyDeal, Fissure } from "../models/worldStateModel.ts";
-import { getConquest, getMissionTypeForLegacyOverride } from "./conquestService.ts";
+import { factionToInt, getConquest, getMissionTypeForLegacyOverride } from "./conquestService.ts";
 
 const sortieBosses = [
     "SORTIE_BOSS_HYENA",
@@ -3628,6 +3628,7 @@ export const getWorldState = (buildLabel?: string): IWorldState => {
         hqo: {
             mt: hexConquest.Missions.map(x => getMissionTypeForLegacyOverride(x.missionType, "CT_HEX")),
             mv: hexConquest.Missions.map(x => x.difficulties[1].deviation),
+            mf: hexConquest.Missions.map(x => factionToInt(x.faction)),
             c: hexConquest.Missions.map(x => x.difficulties[1].risks),
             fv: hexConquest.Variables
         },
diff --git a/src/types/worldStateTypes.ts b/src/types/worldStateTypes.ts
index c323fa0f..4c6aef44 100644
--- a/src/types/worldStateTypes.ts
+++ b/src/types/worldStateTypes.ts
@@ -487,7 +487,7 @@ interface IFbst {
 interface IConquestOverride {
     mt?: string[];
     mv?: string[];
-    mf?: number[]; // hex conquest only. unknown purpose.
+    mf?: number[];
     c?: [string, string][];
     fv?: string[];
 }