Lt. Cedar

Lt. Cedar, short for Lieutenant Cedar, was the codename for the cloning process of Lord Tachanka. Each letter represented a different part of the confidential plan.

Lt: Lord Tachanka

The R in Cedar stands for Reznov

The C and the A represent AC, Absolute Cancer

The D represents Disaster

And the E stands for Entropy

In addition to these, Lt.Cedar may have accidentally created an abomination, who may or may not be genuine about his origin.

While created by Lord Tachanka, it was not run by him. Lord Tachanka created an AI who he used to clone him. That way, no living person would know about his cloning facility. The AI (not to be confused with the AI that Reznov created) became sentient, and secretly created many mindless clones, as it was going to create a clone army. The purpose of this army was not known, as the Nuclear Plague occurred before Lord Tachanka could confront this AI. The failed clones were in stasis at the time of the Nuclear Plague, and they were destroyed following the event. The AI's whereabouts are unknown, however it is most likely destroyed, due to the fact that there is no evidence to suggest otherwise.