In the 1943 conquest, Italy lost control of Libya but the majority of their strength is in Ethiopia. After you conquered the Middle East, invade North America and Australia and then finish the fight. Helping Japan conquer Asia if they had not already had will still be easy because the Allies would have already worn their navy out. If the Allies do invade from the west and manage to gain some land, it should be easy to kick them out of mainland Europe do to the amount of land the Axis Powers probably conquered at this point. The Soviets at this point will possibly push Germany back into Polish territory, so be prepared for either the Soviets or Western Allied invasion. After grabbing resources in Africa which should be easy because you have superiority at the start, try invading the Middle East to counter attack the Soviet Union in Europe and the Allies in Asia. It is recommended to invade Switzerland for more resources, a counter to an Allied invasion, or for a staging area if you invade France. Italy also has the strongest navy in the Mediterranean and a submarine unit located off the coast of Ethiopia in 1939 along with their most powerful naval commander, Riccardi in the Mediterranean. As Italy, you get a great amount of resources and you are closer to the oil fields located in the Middle East and Africa, meaning since you have a large army in Africa and a great navy, you can go grab the resources in both regions.

Italy has an powerful group of generals that can be used to invade France or battle for North Africa, such as Graziani and Badoglio. Italy in the 1939 conquest is in a powerful position in Africa and Europe. Like Germany in the 1975 Conquest, Italy can easily kick the Aliens out of Europe so it's only proper to do just that.

In the 1960 conquest, Italy, along with Germany, usually bears the brunt of the WTO's invasion, but if you manage to hold the line it is optimal to push through Yugoslavia for additional resources. In both conquests you should consider occupying Switzerland and the Middle-East. Conquering Africa is a lot more easier in the 1943 Conquest, with most of Africa being on Axis control.

During the first Conquest, Italy can easily conquer Africa due to their close proximity and the fact that Italy has multiple Commanders near or/ at Africa.

World conqueror 4 italy 1939