From Our Jungle Road to Tokyo, by Robert L. Eichelberger (Gorget Books, 2017; first published 1950), Kindle Loc. 428-37, 1883-1904:
The attempted integration of Australian and American troops at times produced curious results. Sir John [Lavarack] laughed about the fact that he had an American officer at Toowomba who was supposed to be his operations officer. I had been told before leaving Washington that General MacArthur had asked for key American officers to assist the Australians with their staff work. The Australians didn’t think they needed much help from anyone. Many of the commanders I met had already been in combat with the British in North Africa, and, though they were usually too polite to say so, considered the Americans to be — at best — inexperienced theorists. At Camp Cable I encountered a situation that was little less than fantastic. The 32nd Division was assigned to the American I Corps for offensive training and to the Australian II Corps for defensive training. This was a military conception entirely new to me and, of course, quite impracticable. On a day when I paid a visit to observe artillery firing, Australian staff officers arrived to look over defensive techniques. The 32nd went through its paces for them too. Out of the recollections of a Sunday school boyhood there came to me a cogent bit of Scriptural wisdom: “Man cannot serve two masters.”
In New Guinea the fighting into the autumn was largely an Aussie show. Our Air made it possible, our Amphibs did much of the fetch-and-carry, elements of our 162nd Infantry Regiment handled themselves gallantly, but the main responsibility was borne by the 7th and 9th Australian Divisions. Because of the term “Allied Forces,” which the censors then employed, many Americans still believe erroneously that our own troops carried the burden of that back-busting advance against the Salamaua-Lae-Finschhafen sector. The Aussie advance took off from the inland village of Wau, which is about one hundred and fifty miles northwest of Port Moresby. Around Wau, which is thirty-five hundred feet high, lies one of the richest alluvial gold regions in the world. More important militarily to the Australians was the small, steeply sloping Wau airfield. An interesting and little known chapter of history was written there.