Of course, with Australasia playing on home turf, this alliance treaty could be more than just a defense pact—it could also serve as an offensive alliance.
Beyond Australasia, the other countries, although not as strong, are still capable of assembling armies numbering in the tens of thousands, if not hundreds of thousands.
The United Kingdom of the West Coast, the Kingdom of California, and El Salvador, due to their smaller populations, would be doing well to muster an army of one hundred thousand combined.
But the Philippines and Kalimantan are different. With a population already exceeding ten million, the Philippines could forcibly muster an army of 500,000 if need be.
The population of the Great Sultanate of Kalimantan is even greater. While there are no precise figures currently, after accepting the majority of the population from Java Island and Sumatra Island, Kalimantan's population is at least thirty million.