They didn't get very far. Got a bit stuck along the way. though a couple subs were destroyed in Sydney harbour I think.
By agricultural countries, do you mean they just grow stuff? I am not sure that is the case since the 50s for either Australia or Finland. Finland definitely not now, since the paper industry is much smaller, but the tech industry is large.
Perhaps. But Australia also hosts the early-warning missile system for the US, so if it would come at a heavy price for whoever attacked it, as it would draw the US immediately into battle. And, Australia does have a professional army, so they could likely hold their own for a little while.
In Finland, there is a small professional army, but pretty much all men are trained. Also, if the attack came into Finland, it would be seen as a move against the "true" West, so would draw others into battle from Europe at least. It would be WWIII once the border was crossed.
I came up with a new idea while chatting with my friend 
I wanted to tell
I've been getting a lot of help so far based on
He understood my awkward English and had a patient conversation.
I have been studying American-style English so far, so his Australian-style English was difficult to understand.😅
By the way,
He now suffers from a disease he acquired during his 20 years of living in Europe.
Perhaps he got sick because he worked non-stop, I guess.
So, I will first wish him health and happiness.
From now on, I will write sentences, hoping that he will understand my awkward English first.
Japanese naval aircraft prepare for takeoff to attack Pearl Harbor
The Pacific War, sometimes called the Asia–Pacific War,[44] was the theater of World War II that was fought in Asia, the Pacific Ocean, the Indian Ocean, and Oceania. It was geographically the largest theater of the war, including the vast Pacific Ocean theater, the South West Pacific theater, the Second Sino-Japanese War, and the Soviet–Japanese War.
The Second Sino-Japanese War between the Empire of Japan and the Republic of China had been in progress since 7 July 1937, with hostilities dating back as far as 19 September 1931 with the Japanese invasion of Manchuria.[45] However, it is more widely accepted[e][46] that the Pacific War itself began on 7 December (8 December Japanese time) 1941, when the Japanese invaded Thailand and attacked the British colonies of Malaya, Singapore, and Hong Kong as well as the United States military and naval bases in Hawaii, Wake Island, Guam, and the Philippines.[47][48][49]
The Pacific War saw the Allies pitted against Japan, the latter aided by Thailand and to a lesser extent by the Axis allies, Germany and Italy. Fighting consisted of some of the largest naval battles in history, and incredibly fierce battles and war crimes across Asia and the Pacific Islands, resulting in immense loss of human life. The war culminated in massive Allied air raids over Japan, and the atomic bombings of Hiroshima and Nagasaki, accompanied by the Soviet Union's declaration of war and invasion of Manchuria and other territories on 9 August 1945, causing the Japanese to announce an intent to surrender on 15 August 1945. The formal surrender of Japan ceremony took place aboard the battleship USS Missouri in Tokyo Bay on 2 September 1945. After the war, Japan lost all rights and titles to its former possessions in Asia and the Pacific, and its sovereignty was limited to the four main home islands and other minor islands as determined by the Allies.[50] Japan's Shinto Emperor relinquished much of his authority and his divine status through the Shinto Directive in order to pave the way for extensive cultural and political reforms.[51]
The Pacific War broke out when the Japanese Empire attacked on Pearl Harbor of the United States in order to dominate the Pacific.
The Japanese attack on Pearl Harbor was a huge success, resulting in the Japanese Empire as the new ruler of the Pacific.
Victorious Japanese troops atop the Hearn Battery, May 6, 1942.
The Battle of Corregidor (Filipino: Labanan sa Corregidor; Japanese: コレヒドールの戦い), fought on May 5–6, 1942, was the culmination of the Japanese campaign for the conquest of the Commonwealth of the Philippines during World War II.
The fall of Bataan on April 9, 1942, ended all organized opposition by the U.S. Army Forces Far East to the invading Japanese forces on Luzon, in the northern Philippines. The island bastion of Corregidor, with its network of tunnels and formidable array of defensive armaments, along with the fortifications across the entrance to Manila Bay, was the remaining obstacle to the 14th Japanese Imperial Army of Lieutenant General Masaharu Homma. Homma had to take Corregidor, since as long as the island remained in American hands, the Japanese would be denied the use of Manila Bay, the finest natural harbor in the Far East.
The U.S. Army, however, then successfully recaptured the island in 1945.
Imperial Japanese forces conquered American Philippines, Dutch Indonesia, French Indochina, British Singapore, Borneo, Celebez, and New Guinea.
The Japanese won a great victory by capturing 100,000 Americans, Europeans and Australians as prisoners of war.
The Japanese sang songs in praise of the great victory of the Imperial Japanese Army. In the YouTube video, there is music praising the Japanese military, 軍艦行進曲 "Warship March" with English translation.
A map of the Japanese advance from 1937 to 1942
Facing an oil embargo by the United States as well as dwindling domestic reserves, the Japanese government decided to execute a plan developed by Isoroku Yamamoto to attack the United States Pacific Fleet in Hawaii. While the United States was neutral and continued negotiating with Japan for possible peace in Asia, the Imperial Japanese Navy at the same time made its surprise attack on Pearl Harbor in Honolulu on December 7, 1941. As a result, the U.S. battleship fleet was decimated and almost 2,500 people died in the attack that day. The primary objective of the attack was to incapacitate the United States long enough for Japan to establish its long-planned South East Asian empire and defensible buffer zones. The American public saw the attack as barbaric and treacherous and rallied against the Japanese. Four days later, Adolf Hitler of Germany, and Benito Mussolini of Italy declared war on the United States, merging the separate conflicts. The United States entered the European Theatre and Pacific Theater in full force, thereby bringing the United States to World War II on the side of the Allies.
The Japanese Empire brought the United States into World War II by becoming rulers of the world's largest ocean, the Pacific Ocean.
World War II exploded as the greatest war in human history, fought simultaneously in Europe and Asia Pacific, as the Japanese Empire attacked the United States.
Allied attack routes against the Empire of Japan
Midway proved to be the last great naval battle for two years. The United States used the ensuing period to turn its vast industrial potential into increased numbers of ships, planes, and trained aircrew.[140] At the same time, Japan, lacking an adequate industrial base or technological strategy, a good aircrew training program, or adequate naval resources and commerce defense, fell further and further behind. In strategic terms the Allies began a long movement across the Pacific, seizing one island base after another. Not every Japanese stronghold had to be captured; some, like Truk, Rabaul, and Formosa, were neutralized by air attack and bypassed. The goal was to get close to Japan itself, then launch massive strategic air attacks, improve the submarine blockade, and finally (only if necessary) execute an invasion.
The US Navy did not seek out the Japanese fleet for a decisive battle, as Mahanian doctrine would suggest (and as Japan hoped); the Allied advance could only be stopped by a Japanese naval attack, which oil shortages (induced by submarine attack) made impossible.[82][103]
However, the Japanese were convinced that a counterattack by the super-massive Christian empire that ruled the entire New World would begin.
The counterattack of the Christian Empire in the New World, which outperformed European empires, including the British Empire, was much faster than Japan had expected.
U.S. Douglas SBD-3 Dauntless dive bombers of VS-8 from USS Hornet about to attack the burning Japanese cruiser Mikuma for the third time on 6 June 1942
The Battle of Midway was a major naval battle in the Pacific Theater of World War II that took place on 4–7 June 1942, six months after Japan's attack on Pearl Harbor and one month after the Battle of the Coral Sea.[6][7][8] The U.S. Navy under Admirals Chester W. Nimitz, Frank J. Fletcher, and Raymond A. Spruance defeated an attacking fleet of the Imperial Japanese Navy under Admirals Isoroku Yamamoto, Chūichi Nagumo, and Nobutake Kondō near Midway Atoll, inflicting devastating damage on the Japanese fleet. Military historian John Keegan called it "the most stunning and decisive blow in the history of naval warfare",[9] while naval historian Craig Symonds called it "one of the most consequential naval engagements in world history, ranking alongside Salamis, Trafalgar, and Tsushima Strait, as both tactically decisive and strategically influential".[10]
Luring the American aircraft carriers into a trap and occupying Midway was part of an overall "barrier" strategy to extend Japan's defensive perimeter, in response to the Doolittle air raid on Tokyo. This operation was also considered preparatory for further attacks against Fiji, Samoa, and Hawaii itself. The plan was undermined by faulty Japanese assumptions of the American reaction and poor initial dispositions. Most significantly, American cryptographers were able to determine the date and location of the planned attack, enabling the forewarned U.S. Navy to prepare its own ambush.
Four Japanese and three American aircraft carriers participated in the battle. The four Japanese fleet carriers—Akagi, Kaga, Sōryū, and Hiryū, part of the six-carrier force that had attacked Pearl Harbor six months earlier—were sunk, as was the heavy cruiser Mikuma. The U.S. lost the carrier Yorktown and the destroyer Hammann, while the carriers USS Enterprise and USS Hornet survived the battle fully intact.
After Midway and the exhausting attrition of the Solomon Islands campaign, Japan's capacity to replace its losses in materiel (particularly aircraft carriers) and men (especially well-trained pilots and maintenance crewmen) rapidly became insufficient to cope with mounting casualties, while the United States' massive industrial and training capabilities made losses far easier to replace. The Battle of Midway, along with the Guadalcanal campaign, is widely considered a turning point in the Pacific War.
As Japan suffered a major defeat by the United States in the Battle of Midway, the tide of the Pacific War began to be drawn in favor of the United States.
The Japanese Overlords predicted that a full-fledged American counterattack would begin as America's unlimited productive capacity was completed around 1943.
The Japanese devised a defensive strategy because they expected the US force to be completed around 1944.
So, Japanese strategic officers insisted on an expedition to Australia to prevent a US counterattack.
Japanese military strategic officers studied Australia's geopolitical location and values.
Allied attack routes against the Empire of Japan
Midway proved to be the last great naval battle for two years. The United States used the ensuing period to turn its vast industrial potential into increased numbers of ships, planes, and trained aircrew.[140] At the same time, Japan, lacking an adequate industrial base or technological strategy, a good aircrew training program, or adequate naval resources and commerce defense, fell further and further behind. In strategic terms the Allies began a long movement across the Pacific, seizing one island base after another. Not every Japanese stronghold had to be captured; some, like Truk, Rabaul, and Formosa, were neutralized by air attack and bypassed. The goal was to get close to Japan itself, then launch massive strategic air attacks, improve the submarine blockade, and finally (only if necessary) execute an invasion.
The US Navy did not seek out the Japanese fleet for a decisive battle, as Mahanian doctrine would suggest (and as Japan hoped); the Allied advance could only be stopped by a Japanese naval attack, which oil shortages (induced by submarine attack) made impossible.[82][103]
The Japanese army's staff predicted that the United States would create a route for supply and communication between Australia and the mainland United States through the Gilbert Islands, Solomon Islands and the Marshall Islands.
The Japanese realized that Australia had no heavy industry capable of producing aircraft carriers, warships and submarines.
So, they were convinced they could win if they stopped the US military from building a bridgehead in Australia.
They predicted that if American heavy equipment, weapons and troops could not reach Australia, Australia would be powerless against Japanese aggression.
As
Because Australia's naval power was weak, They were convinced that the Japanese occupation of the Gilbert Islands, Solomon Islands and the Marshall Islands could isolate Australia. To do that, They argued, they must block the link between the US and Australia.
Operation Mo (MO作戦, Mo Sakusen)
Operation Mo (MO作戦, Mo Sakusen) or the Port Moresby Operation was a Japanese plan to take control of the Australian Territory of New Guinea during World War II as well as other locations in the South Pacific. The goal was to isolate Australia and New Zealand from the Allied United States.
The plan was developed by the Imperial Japanese Navy and supported by Admiral Isoroku Yamamoto, the commander-in-chief of the Combined Fleet, but the operation was eventually abandoned.
So, Through Operation Mo (MO作戦, Mo Sakusen), the Imperial Japanese Army attempted to disconnect Australia and New Zealand from their links with the US mainland.
The U.S. understood the Japanese military's intentions by looking at the Japanese advance ways. So, The Solomon Islands campaign took place.
The Japanese naval staff were convinced that a victory could be achieved if they captured Guadalcanal in the Solomon Islands.
So, when Japanese troops landed on Guadalcanal, the United States realized the strategic value of Guadalcanal belatedly, The Guadalcanal campaign </ a> occurred.
In The Guadalcanal campaign, the United States, Australia, and New Zealand allied forces fought the Japanese army for a year, and the Japanese army were eventually defeated.
First of all I hope my friend
I felt that 80 years ago, the overlords of East Asia, including Japan, understood Australia as a Finnish-level country with weak self-defense!
In particular, the overlords of East Asia seemed to perceive Australia as a bridgehead for US hegemony in the Pacific!
I will let my friend