ˌaɪˌɛfdˈʌbəljˌuː mˈɛmbɚz pɑːɹtˈɪsᵻpˌeɪɾᵻd ɪn vˈɛɹiəs "səsˈaɪəɾiz" wɪðˌɪn ðɪ ˌaɪˌɛfdˈʌbəljˌuː fɔːɹ spˈɛʃəl ˈɪntɹɛsts, sˈʌtʃ ɐz ðə kˈæsəl ænd kɹuːsˈeɪd səsˈaɪəɾi, wˌɪtʃ pɹəmˈoʊɾᵻd mˈɛdɪˌiːvəl wˈɔːɹɡeɪmɪŋ, ænd ðɪ ˈɑːɹmɚd ˌɑːpɚɹˈeɪʃənz səsˈaɪəɾi, wˌɪtʃ ˈɛmfɐsˌaɪzd wˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː wˈɔːɹɡeɪmɪŋ.
IFW members participated in various "societies" within the IFW for special interests, such as the Castle & Crusade Society, which promoted medieval wargaming, and the Armored Operations Society, which emphasized World War II wargaming.