The Cadmus program was the ambitious, century-long initiative operated by humans to make the planet Mars habitable to Terragenid life. Though such a project had been planned for decades prior, the unofficial start of the program was the deployment of the ANCILE (Aegis Nuclear Core Inductive Lagrange-1 Electromagnet) at Mars L-1 by the last Ares mission in 2033, allowing the artificial Martian magnetosphere to accumulate. The program was finally announced in 2048, with the unveiling of Minerva's prototype cometary redirection spacecraft.
Following this, the Martian atmosphere and water content was embellished considerably by the Cadmus I mission’s 2061 redirection of Halley’s Comet and numerous other, smaller periodic comets to a collision vector with Mars (a decision with considerable public backlash, but much benefit.) Cadmus II (2068), III (2072), and IV (2085) brought genetically engineered microorganisms to the surface of the red planet, designed to convert the atmosphere from carbon dioxide to oxygen and remove harmful chemicals from Martian minerals and water. After over half a century of no human activity on the Martian surface, the Cadmus V mission established New Thebes in Da Vinci Crater: humanity’s first permanent residence on a planet other than Earth.
Once a continuous human presence was established on the surface of Mars, humans could more directly monitor the progress of the terraforming initiative. In fact, the 2102 ansible test at New Thebes was cut short by Mars' first rainstorm, and about a decade later the burgeoning young Boreal Ocean reached the lower terras. Throughout these developments, autonomous Cadmus missions brought terragenid lifeforms to the surface of the planet to facilitate its terraformation, and in 2148 the Cadmus IX mission brought one final wave of oceanic life from Earth to Mars, finishing the Cadmus program proper.