Kammala jumla mai zuwa: A 1924, rukunin ya canza daga doki zuwa makamai, yana karɓar tankuna na farko, kuma ya zama Kamfanin Tank na 40. A cikin 1934, kamfanin ya sake turawa zuwa San Francisco saboda
1934 West Coast bakin teku yajin aiki. A watan Fabrairun 1941, a matsayin Kamfanin C, 194th Tank Battalion, an kunna rukunin don horo a Fort Lewis, Washington; daga baya a wannan shekarar a watan Satumba, an tura rundunar zuwa Philippines. Lokacin da Amurka ta shiga cikin Yaƙin Duniya na II ta hanyar harin Japan a Pearl Harbor, daga Disamba 1941 zuwa Afrilu 1942, rundunar ta yi yaƙi da sojojin Japan. Kamfanin ya gudanar da janyewar yaƙi a Kudancin Luzon; sannan ya yi yaƙi a Bataan har sai an umurce su da su mika wuya. A matsayin fursunonin yaƙi (POW), sojoji na rukunin sun sha wahala ta hanyar Bataan Death March, kuma daga baya aka tura su daban-daban zuwa sansanonin POW daban-daban a duk faɗin yankunan da Japan ke sarrafawa; bayan mika wuya na Japan, sojojin da suka tsira sun koma Amurka a tsakiyar watan Satumba na shekarar 1945.