FDFmod 1.0 for ARMA 2 + Operation Arrowhead and
ARMA 2: Combined Operations

How to install (Steam-version)

1. Make sure you can run ARMA 2: Combined Operations through Steam. For instructions on how to combine ARMA 2 and ARMA 2: Operation Arrowhead prefer to this thread in Bohemia Interactive’s forum: http://forums.bistudio.com/showthread.php?t=101214

2. Run the ArmA2_FDFmod.exe (it will take a while to load)

3. Proceed by clicking Accept

4. Select your ARMA 2: Operation Arrowhead Steam folder using Browse. It is important that you install FDFmod into right folder. The default ARMA 2: Operation Arrowhead Steam folder is C:\Program Files x86\Steam\steamapps\common\arma 2 operation arrowhead\ but this will wary depending on where you have installed Steam.

5. Click Install and wait for the installer to extract all files. FDFmod readme will open when installation is complete. Readme can be found in your ARMA 2: Operation Arrowhead Steam folder.

6. Find ARMA 2: Operation Arrowhead in your Steam games list. Right click on it and select Properties.

7. In Properties window select SET LAUNCH OPTIONS…

8. In Launch Options window you will see an empty text field. Write “-mod=FDFmod” to this field (with quotes) and click OK.

9. Right click on ARMA 2: Operation Arrowhead in Steam games list and select Launch ARMA 2: Combined Operations.

10. ARMA 2: Combined Operations will now start with FDFmod.


  1. alex12 said on 12 May 2011 at 19:49:


  2. alex12 said on 12 May 2011 at 19:52:


  3. Blackops073 said on 3 Jan 2012 at 23:34:

    everytime i get a error. cant find: ect. ?

  4. Dmitri said on 7 Mar 2012 at 22:57:

    nice mod we wont more mods with you )) can you create nice Nimitz …. ? pls )

  5. Oleg said on 26 Apr 2012 at 11:22:

    can you change skin F-18C Hornet in American version “VMFA”

  6. Ruua said on 7 Aug 2012 at 16:05:


  7. Teemu said on 8 Jan 2013 at 23:03:

    Mulla jäätyy koko peli kun valitsen tehtävän. Ja sit sitä perkeleen apua ja nopiasti.

  8. Jaakko said on 18 Feb 2013 at 19:31:

    Sama juttu ku Teemulla, mitä tällä asialle voisi mahdollisesti tehdä?

  9. Vois said on 27 Feb 2013 at 21:52:

    Tänne on näköjään mainosbotit iskenyt.

  10. Preston Cole said on 3 Apr 2013 at 16:08:

    Ottakaa käyttöön “expansions” luettelosta vain nämä: arma 2, fdf mod, expansions ja kaikkia joissa lukee (lite)

  11. x said on 13 Apr 2013 at 00:54:

    i’ve that combined package from steam. When i set that launch option, it removes arma 2 from extensions and FDF campaign is not available either. I installed the game on arma2 folder like instructions say. What’s the problem?

  12. senior executive assistant resume said on 20 Apr 2013 at 19:29:

    nice post keep it up

  13. Bjorn said on 7 May 2013 at 16:02:

    Does not work Every file is missing when you try to start

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  21. YourGhostInside said on 2 Jul 2013 at 03:25:

    i have an error it says:

    CRC failed in FDFmod\AddOns\FDF_air.pbo
    Unexpected end of archive

    Please help!!

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  26. turtledaddy said on 11 Oct 2013 at 05:47:

    I did everything and i cant find “launch arma 2: combined operations” when i right click on arma oa (steam). how do i fix this or is there anyway i can load this mod loader another way?

  27. Colt said on 17 Jan 2014 at 21:48:

    Hajottaa hieman kun ei saa Arma 2 ja Operation Arrowheadia yhdistettyä Combined Operationsiksi steam listassa. Koitin asentaa FDF:än arrowheadin roottiin mutta kun menen pelaamaan arrowheadin niin fdf kampanjan käynnistyksessä kaatuu. Kellään tietoa miten saisin Combined Operationsis näkyviin?

  28. hakkarainen said on 29 Jan 2014 at 19:14:

    Ei tarvitse kuin asentaa modi oikeaan osoitteeseen. Steamin launch optioneihin ei tarvitse sekaantua, eikä luoda CO kuvaketta. Steam versio varmaan aikojen saatossa korjattu, eli ei muuta kun asennus oikeaan osoitteeseen. Hyvin helppoa.

  29. mietin vaan said on 8 Feb 2014 at 17:57:

    ja mikäköhän on tämä oikea osoite?

  30. hakkarainen said on 10 Feb 2014 at 19:07:

    yllämainittu, eli: “C:\Program Files x86\Steam\steamapps\common\arma 2 operation arrowhead\”. Tai se mihin ikinä olet steamisi asentanutkaan.

  31. Aapeli said on 19 Mar 2014 at 21:37:

    tuota se näyttää expansions kohdasta että fdf on päällä mutta se ku ei pyöri sillä modilla. se pyörittää vaan ihan originaalia A2OA

  32. Aki said on 21 Apr 2014 at 13:50:

    Itse koitin kanssa nyt ensimmäistä kertaa ja menee niin pitkälle kun valitsen FDF modin Single Playerissa ja Start ja Difficulty niin sen jälkeen tyssää…

    Tällaisen herjan antoi heti peliä avatessa “No entry bin\config.bin/CfgVehicles/USNC_Soldier_Base.scope’_”

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  34. Hope this helps. said on 11 Jun 2014 at 00:37:

    Guys it just might not be at the right folder, for some reason i couldnt change where the folder went, so i simply copied and pasted it from the bohemia interactive arma2 then just pasted it into steam > steamapps > common > arma 2 oa.

  35. Jatze said on 14 Aug 2014 at 02:20:

    Minulla myös ilmoitti “No entry bin\config.bin/CfgVehicles/…” jollain eri lopputiedostolla kuin ylempänä Aki mainitsi. Alkoi toimimaan oikein kun poisti tuon 8.-kohdan käynnistysvalikon “-mod=FDFmod” tekstin. Eli asentakaa FDF modi vain oikeaan kohtaan “Steam\steamapps\common\arma 2 operation arrowhead” eikä mitään muita muutoksia. Älkää käyttäkö ohjeita 6.-10.

    Do not write in Launch Options “-mod=FDFmod”. Only instal FDF mod in “Steam\steamapps\common\arma 2 operation arrowhead”. Do not use the instructions in 6.-10.

  36. KyroVonKyro said on 17 Oct 2014 at 22:58:


    It’s not working for me.. : /

    Well, when I start the game I got the map in editor mode but no soldiers, vehicles etc (no units from the mod) + when I start the map there is only buildings, no trees, no nothing except for the ground.

    What have I done incorrect?


  37. someonefromtheabyuss said on 1 Nov 2014 at 16:47:

    What does it add?

  38. jr said on 28 Dec 2014 at 16:34:

    Mulla on tuo Arma 2: Complete Collection enkä saa asennettua. 9. kohta ei toimi, koska valikossa ei mitään co:ta edes näy.

  39. FinnishArma said on 20 Feb 2015 at 15:09:

    Hyvä modi. Karttoja ja SP tehtäviä voisi olla enemmän.

  40. Mirko Nuttisumi said on 25 Aug 2015 at 17:43:

    Such a cool mod, I had this working in no time at all, Thanks for this:) Mirko.

  41. jesperi_99 said on 25 Jun 2016 at 19:31:

    hyvä modi! javiel kun olis arman pelaajia onlinessa olisi hyvä 😀 laittakaa pyyntöä tulemaan steamissa jos olette myös arman pelaajia nimi on jesukka99 tai jese[fin]

  42. ukalabugala said on 29 Jul 2017 at 00:00:

    toimiiks tää perus arma kakkosessa

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