There appears to be not much consideration given to this. In Africa, the least said the better. Some may say it is not practicable to abolish standing armies. The only reason for standing armies is human nature, which is greedy, covetous, dishonest, full of lies and deceit. They fight to get what does not belong to them.
Nations go to war to conquer, capture and loot from the vanquished.
If all nations do away with covetousness, there will be no fear of wars. And without the fear of wars, there is no need to keep standing armies. The money saved from the standing armies could then be used to buy the required sophisticated equipment and train personnel to handle natural disasters. Costa Rica, such a small country as it is, has wisely abolished its standing army. It now lives in peace, and is using its resources only for the social and economic benefit of its citizens.