"In ten years, with your guidance and a little luck, there will be a hundred new Spartans in the war. Employing several of these new Spartans to help train the next classes, there will be thousands within twenty years. With projected improvements in technology, perhaps a hundred thousand Spartans will be created in thirty years."
Alpha Company was the first class of supersoldiers trained and deployed under the SPARTAN-III Program, a top-secret initiative undertaken by Office of Naval Intelligence, Section Three'sBeta-5 Division in 2531. Believing that Dr. Halsey's SPARTAN-II program was a good step taken by the wrong person, the project was conceived by Army Colonel James Ackerson and a handful of high-ranking ONI officials to create a batch of cheaper and expendable super-soldiers to be used in suicide missions against the Covenant to slow them down. Ackerson brought in SPARTAN-II Kurt-051, and Chief Petty Officer Franklin Mendez to assist him in the project.
Instead of children with special genetic traits, Kurt recruited orphans around the age of four to six years—with a few notable exceptions—who were given a chance to fight back against the xeno-organisms that destroyed their lives. The recruits arrived at the planet Onyx in December of 2532 and the program was officially initiated. Alpha Company's training regime was arguably tougher than that of SPARTAN-II Program's Class I, with more emphasis on combat-efficiency and individual-skill. The recruits, who were mostly refugees from Outer Colonies attacked by the Covenant, showed remarkably high aggressive traits for their age and maturity. After five years of intensive training and practice in the art of war, the candidates underwent Project CHRYSANTHEMUM's augmentation procedures and became active in late-2537.
After their trial-by-fire that was the Insurrection of Mamore, Alpha Company's success would be proven through their instrumental participation in the battles of New Constantinople, the Atlas Moons, and Operation: VENOM. After a year of constant combat, however, the remaining 300 SPARTANs took part in Operation: PROMETHEUS, a high-risk operation to destroy a Covenant shipyard in KV-47. A critical mistake with their satellite equipment saw the deaths of most, if not all of the 300 SPARTANs, but their mission was a success. Only those pulled out of the main company prior to PROMETHEUS, such as headhunters and Category-2s survived. By 2553, the war had come to an end, and the surviving SPARTAN-IIIs of Alpha Company were given a chance to join Spartan Operations. Alpha Company was succeeded by Beta Company.
While a total of almost five hundred trainees were brought to Onyx to be trained in some capacity and as a result retained their SPARTAN tags, ONI has lost most of the personnel information on the company thanks to the destruction of low- and high-level data caches during the Human-Covenant War, with the most damage being caused during the Onyx conflict. As ONI continues their efforts to catalogue their vast data network, and more survivors are uncovered, this list will be updated.
Officially, it is stated that only 300 SPARTAN-IIIs graduated from Alpha Company, with the other trainees either failing the training or unable to cope with the strain of the CHRYSANTHEMUM enhancements. In reality, a great many other survivors were deployed away from their common brethren under separate commands, and are usually paired with improved training to allow them to take on different missions to what they were originally trained for.