In the novel Edit
Commander Warren is presumably an older man who supported Gilead's rise to power. For his loyalty, he became a Commander and he and his barren Wife were assigned a Handmaid. It is implied that Warren himself is infertile, and that his Wife and Ofwarren colluded to have Ofwarren sleep with her doctor to conceive and pass the child off as Warren's. It is unknown if Warren was in on this plan or suspected it. Ofwarren successfully conceived and gave birth to a daughter, Angela; unfortunately, the baby was born with defects and only lived for a few weeks.
In the TV series Edit
Commander Warren's full name is Warren Putnam. In the series, he has a slightly larger role. He had an affair with Janine, claiming that he loved her and intended to run away with her and their daughter. However, this was apparently a lie to get her attention, as he does no such thing and lets Janine be reassigned, leaving her distraught and even more unstable than ever.
Later at night, Janine is standing on the edge of a bridge with Angela. Various Gileadan guards, the Putnams, Waterfords, and Aunt Lydia are also present. Janine loudly accuses Commander Putnam of lying to her and accuses him of having promised to leave his wife for her. Offred is able to convince Janine to give her the child but Janine jumps, attempting suicide. She is pulled out by the guards. Commander Putnam is later seen being led into a black van by guards due to the accusations made by Janine. .
Mrs. Putnam asks that her husband receive the harshest punishment possible, as she fears for his immortal soul. Ultimately, Putnam's left hand is amputated..