Since there are no army, Air Force, marines, or navy – the goal of the military is to function as a self-defense force. In other words, it will not attack any country as long as its sovereignty is not challenged. With that being said, the military will work in conjunction to defeat any hostile country.
For ground hardware, this will typically offer the Challenger 2 tank. The choice for this tank is that it will likely be more affordable than the Abrams M1. An APC (Armored Personnel Carrier) will also be acquired for land forces. However, the main tool for tank warfare will be anti-tank missiles, and bomb carried drones as this tactic proved very successful in the Russo-Ukranian War. There will be an eventual development, and hopefully production of remote controlled weapon systems. Since there is no army, the National Guard will be in charge of the APCs, and tanks. The tanks will have an autoloader system that would take up most of the tank’s interior. These weapons will be located close to the outer edges of the nation.
For Missile defense, the nation will take cues from the Israeli Iron Dome system which has proven very successful for Israel, and the entire nation will have this system in place. While this will likely be very expensive, the military industry will work on developing a satellite that will be solar powered, and intended to destroy ICBMs that would be fired into space. This is to assure that no ICBM will enter the nation’s airspace, and therefore protect the nation. To shoot down the ICBM, lasers will be used which will define the benefit of the solar powered system.
For anti-air defenses, there will be SAMs (Surface to Air Missiles) which will shoot down any invading force. In addition, the military industry will work on drones the size of fighter jets, but where the cockpit will be, the ammunition chamber for the aircraft’s gun. These drones will be piloted by people on the ground, and it will likely cost about the same as a fighter jet. This drone will have to serve multiple roles from interceptor missions, escorts, and ground support in case there was an invasion.
The goal is to make the military as safe for the Kaldan soldiers as possible. It is expensive to train someone to pilot an aircraft or drive a tank. With these be remotely controlled, the personnel will be safe if the vehicle they are controlling will be destroyed.
For ammunition sizes, the nation will try to use to NATO standard ammunition. While it would be more likely that the nation is not a part of NATO, it will still use their size rounds since they are mass produced, and therefore can be acquired in times of peace. The military industry will also be making these standard rounds. Every soldier will receive their own hand gun, and automatic rifle. Each of these weapons will have a biometric fingerprint to prevent unauthorized use. Basically, only the soldier the weapon belongs to will be able to use it. This has disadvantages, but I feel the advantages will outweigh the disadvantages.