ane , ▁Australia , ▁on ▁ 1 7 ▁December , ▁she ▁encountered ▁and ▁s ank ▁B ando eng ▁Mar u , ▁a ▁passenger - fre ighter ▁head ed ▁for ▁the ▁Sol omon ▁Islands ▁with ▁tro op ▁rein for c ements . ▁▁ 1 9 4 3 ▁ ▁During ▁her ▁fourth ▁war ▁pat rol ▁( 2 1 ▁January ▁– ▁ 1 8 ▁March ▁ 1 9 4 3 ), ▁Gr ou per ▁res cu ed ▁an ▁av i ator ▁who ▁had ▁been ▁str and ed ▁on ▁R eng i ▁Island ▁for ▁several ▁days ; ▁she ▁also ▁located ▁several ▁key ▁Japanese ▁rad ar ▁install ations ▁in ▁the ▁Sol om ons . ▁ ▁Group ers ▁next ▁four ▁pat rol s ▁n ett ed ▁her ▁no ▁further ▁k ills , ▁despite ▁several ▁determined ▁attacks , ▁but ▁the ▁pat rol s ▁illustrated ▁the ▁varied ▁tasks ▁sub mar ines ▁took ▁on ▁during ▁the ▁war . ▁In ▁addition ▁to ▁her ▁regular ▁pat rol ▁duties , ▁which ▁har ass ed ▁Japanese ▁sh ipping ▁and ▁tied ▁up ▁valuable ▁war ships ▁des per ately ▁needed ▁by ▁the ▁enemy , ▁Gr ou per ▁land ed ▁ 5 0 ▁men ▁and ▁ ▁of ▁g ear ▁on ▁New ▁Britain ▁to ▁carry ▁on ▁gu err illa ▁war fare ; ▁at ▁the ▁same ▁time , ▁she ▁res cu ed ▁an ▁American ▁av i ator ▁who ▁had ▁been ▁str and ed ▁there ▁almost ▁three ▁months . ▁This ▁mission ▁is ▁dep icted ▁in ▁episode ▁ 2 1 ▁of ▁The ▁Sil ent ▁Service , ▁an ▁American ▁TV ▁series ▁that ▁a ired