<prompt> Bhala okuqhubekayo kwalesi sigaba - Ibutho lahlala eCeylon kwaze kwaba ngoJulayi 1942, lapho amaBrigade ayi-16 ne-17 aqeda ukubuyela e-Australia. Lapho befika ngo-August, i-regiment yakhiwa kabusha eGreta, eNew South Wales. Ngalesi sikhathi, eNew Guinea, amaJapane ayeseqhubekela ePort Moresby  <response>: . futhi. Amabutho eMilitia ayeqale ukubambezela ukuqhubekela phambili ayeqiniswe yiBrigade yama-21 neyama-25, futhi ndawonye la mabutho amisa ukuqhubekela phambili kwamaJapane. I-16th Brigade yathunyelwa lapho ama-Australia eqala ukuhlasela amaJapane ukuze abuyele emuva ezindaweni zawo ezizungeze iBuna Gona. I-21st Field Regiment yabelwe ukuvikela iPort Moresby ekuqaleni, kodwa ngoNovemba yahlukanisa izakhi zebhethri lama-51 ukusekela ukuhlaselwa kwe-US 32nd Infantry Division eBuna, ngenkathi okusele kwebhethri kwabelwe ukusekela ukuhlaselwa kwe- 7th Division eGona. NgoJanuwari ka-1943, i-2nd Battery, kanye nendlunkulu ye-regimental, yathuthela eBuna, kanti i-1st Battery yathuthelwa eWau lapho basekela khona iKanga Force ngesikhathi seMpi yaseWau. Okwamanje, ingxenye enkulu ye-regiment yayisetshenziselwa ukukhulisa i-X Field Battery ezungeze iPari, ukugibela izibhamu ezingama-18-pounder eduze nezindawo ezisanda kwakhiwa ethekwini eBuna, ngaphambi kokuthunyelwa e-Oro Bay. NgoFebhuwari ka-1943, badedelwa yi- a href26th20Field20Regiment2028Australia2926th Field Regimenta futhi babuyela ePort Moresby, ngenkathi ibhethri lokuqala lihlala eWau kulo lonke umkhankaso weSalamauaLae. 