Rubuta ci gaba don wannan sakin layi - "Heermann" an sanya shi zuwa Rundunar Sojoji ta Uku da Task Force 39 a ranar 18 ga Maris 1944 bayan ya tsaya a Majuro Lagoon sannan kuma Port Purvis a tsibirin Florida, a cikin Solomons. A cikin watan da ya biyo baya, jirgin ruwa ya biye da jiragen ruwa wanda ke mamaye tsibirin Emirau.
da kuma neman jiragen ruwa na abokan gaba a bakin tekun New Hanover. Bayan tsayawa a Purvis a ranar 3 ga Yuni, "Heermann" ya shiga cikin harin wani tanki a Fangelawa Bay, New Ireland a ranar 11 ga Yuni, sa'an nan kuma ya yi amfani da ASW daga Solomons zuwa Admiralty, Caroline, da Marshall Islands har zuwa ranar 26 ga Yuni. A tsakiyar 1944, "Heermann" ya raka jiragen ruwa na kasuwanci daga Espiritu Santo, New Hebrides da Nouméa, New Caledonia. Mai rushewa ya koma Port Purvis kuma ya tashi a ranar 6 ga watan Satumba na 1944 tare da rundunar sojan ruwa na Rear Admiral William Sample, yana ba da rakiya a lokacin mamaye tsibirin Palau. Bayan wannan, an cire jirgin ne don ayyukan a tsibirin Philippines.