Mezue ahịrịokwu na-esonụ: "Heermann" e kenyere ya na Third Fleet na Task Force 39 na 18 March 1944 mgbe ọ kwụsịrị na Majuro Lagoon na mgbe ahụ Port Purvis na Florida Island, na Solomons. N'ọnwa na-eso ya, ụgbọ mmiri ahụ na-eso ụgbọ mmiri ndị a na-ebugharị.
Ịchịchị agwaetiti Emirau na ịchọ ụgbọ mmiri ndị iro na-ebubata ihe n'akụkụ ụsọ oké osimiri nke New Hanover. Mgbe ọ kwụsịrị na Purvis na 3 June, "Heermann" sonyere na bọmbụ nke ugbo tankị na Fangelawa Bay, New Ireland na 11 June, wee mee ASW patrol si Solomons n'ebe Admiralty, Caroline, na Marshall Islands ruo 26 June. N'etiti afọ 1944, "Heermann" so ụgbọ mmiri ndị ahịa si Espiritu Santo, New Hebrides na Nouméa, New Caledonia. Destroyer laghachiri Port Purvis wee pụọ na 6 Septemba 1944 na Rear Admiral William Sample's escort carrier force, na-enye escort n'oge mbuso agha nke Palau Islands. Mgbe nke a gasịrị, e wepụrụ ụgbọ agha ahụ maka ọrụ na Philippines Islands.