Zeon Mobile Suit
By the middle of the One Year War, the Principality of Zeon was well aware that the Earth Federation was researching and developing mobile suit projects to counter the Zeon's army of mobile suits. Despite the Zeon's advanced mobile suit technology, the appearance of the RX-78-2 Gundam with its beam rifle technology followed by the mass production RGM-79 GMs equipped with the Beam Spray gun quickly negated the Zeon's advantage.
The Principality of Zeon decided that its mobile suits needed to incorporate the vastly superior beam weapons into its mobile suit designs. So, when the plans for the new mobile suit (MS-11 Gelgoog) showed up, they redesigned the plans to be able to use beam weapons. The plans for the original "MS-11 Gelgoog" only allowed it to use ballistic weapons like the machine gun, and its power output was unable to handle a Beam-based weapon. After redesigning the plans, the mobile suit was capable of using beam-based weapons. Removing the designation "MS-11" and shifting it to the Pezun Project's " MS-11 Action Zaku", they redesignated the new mobile suit "MS-14", but retained the name.
The high-performance A-Type Gelgoog was equipped with a twin-bladed beam saber (referred to as a beam naginata due to the shape of the blades, though it was actually very different in function from the traditional Japanese weapon) and a high-output beam rifle, a first for a Zeon mobile suit. The Gelgoog was a superior mobile suit in every aspect to the MS-06F Zaku II and even the new MS-09R Rick Dom.
While the Gelgoog was the most powerful production-type MS of the One Year War by a considerable margin, matching or slightly exceeding the Earth Federation's RX-78-2 Gundam unit, it was never produced in the numbers required to counter the sheer numbers of RGM-79 GMs that walked off the production lines before the end of the war. It is possible that if the Gelgoog had been pushed into production even two weeks sooner, it may have been able to secure independence for Zeon. However, Zeon's practice of dividing the Principality's limited design and production resources among numerous mobile suit and mobile armour projects made this impossible.
The last major problem with the Gelgoog was that it had mainly rookie pilots inside the cockpits, as most of Zeon's more experienced pilots had been killed in earlier battles. These novice pilots had seen little or no combat before the Battle of A Baoa Qu, and could not use their Gelgoogs effectively enough to counter the Federation's less powerful GM models, piloted by skilled veterans of the Battle of Solomon.
After the war, some units were taken by the Federation to serve as high-performance aggressor trainer units, while others escaped into deep space with various Zeon remnants; the majority had either died at A Baoa Qu or were marched off to the scrapper's torch. Similar to Zaku II and Rick Dom, some Gelgoog were modified into MS-14A Gelgoog [Stutzer] by remnants of the Zeon forces, as they no longer had any production capabilities for any new mobile suit designs. The Gelgoog "Stutzer" was enhanced with winch units, which were able to launch wire-guided arm parts that could entangle enemy machines with wire, or throw hand grenades at them while the mobile suit itself remained hidden. Additionally, the Stutzer feature extra armor that almost completely covers its upper body, and has the old backpack replaced with special parts. These extra parts contain supplemental thrusters and a propellant tank to increase it's mobility. Some examples of old MS-14 Gelgoog survived postwar in museums.