Regarding my viewpoint about CSA expansions:
As i see it, the CSA was maybe the least successful expansionist country of North America. They relied heavily on foreign weaponry importations to equip their armies, navies and, later on, airforces while the industrialization process was still going on, at least to achieve the industrialization levels of their nothern neighbours.
They even suffered a considerable territorial loss because of their constitucional policy of giving more autonomy to the states. That's how a referendum was hold in Texas in 1885 and they became independent while mantaining very good relations with their old partners.
Does it mean they didn't expand? No. In 1898 they waged a war with Spain to conquest Cuba and they got it and Cuba was annexed as another state of the Confederation being Puerto Rico a mere possession.
However Cuba proved to be a nightmare fueled by the corrupt local government and the acts of guerrillas in the Cuban wilderness feed by the independentist will first and, later on, also by communist, leftist groups.
That's how Cuba became the CSA's Vietnam in this timeline and where this pic fits:
Confederate States of America (CSA), Hawker Hunter FGA9:
They decided to buy some Hunters to the United Kingdom after they proved to be very successful in bombarding rebel positions in Oman.