Tasheera Farrington-Nichols Marshall was born 13 June 1983 in San Jose, California. Around 1988, Marshall's father joined the United States Army, and eventually received orders to Joint Base Lewis-McChord in Washington state. After graduating from high school in 2001, Marshall began attending Saint Augustine's University, a historically black institution, in Raleigh, North Carolina. During college, Marshall selected the Reserve Officer Training Course (ROTC) as an elective, and at the end of 2001, she began speaking with a U.S. Army recruiter in anticipation of joining the reserve. Instead, the recruiter enlisted her into active service.

In 2002, Marshall traveled to Fort Jackson, South Carolina for basic training, and was then sent to Aberdeen Proving Ground in Maryland for Advanced Individual Training (AIT). After AIT, Marshall returned to college, and was attached to the 535th Military Police Battalion in Garner, North Carolina, where she was assigned to the motor pool, and tasked with monitoring the vehicle keys .

Towards the end of college, Marshall met her future husband, and became pregnant during her senior year. She was then informed that she would no longer be able to commission due to the pregnancy, and after graduating, returned to Tacoma, where she had twin daughters. During her time in Tacoma, Marshall was participating in active drills, and eventually decided to return to North Carolina and rejoined her former reserve unit.

In June 2006, Marshall was commissioned, and attached to U.S. Army Cadet Command, an ROTC recruit program. She was also married in 2006. In 2007, Marshall was sent to Fort Benning, Georgia, for six weeks of Basic Officer Leadership Course II (BLOC II), and in 2008, to Joint Base Langley-Eustis, Virginia, for transport training. Afterwards, Marshall received her first assignment, an unaccompanied tour to Kaiserslautern, Germany, where she was attached to the 39th Transportation Battalion and tasked as the Rear Detachment Commander for the 15th Trailer Transfer Detachment. In this role, Marshall was in charge of in-processing soldiers and delivering them to their commander.

Marshall was eventually attached to the 635th Movement Control Team, also in Germany, because of their need for a commander. In 2010, Marshall, now a captain, and her team deployed to Contingency Operating Base (COB) Adder and COB Basra, Iraq, where they were tasked with tracking aircraft and truck movements in and out of Kuwait. During her time in Iraq, Marshall helped with the organization of the Joint Base Balad Pan-Hellenic Council, known as the Divine Nine in the United States, which consists of nine historically African-American, Greek fraternities and sororities. At the end of the deployment, Marshall returned to Germany, and a few weeks later, she returned to the United States.

In 2001, Marshall was sent to the Logistics Captains Career Course at Fort Lee, Virginia, and then assigned to U.S. Army Recruiting Company Headquarters outside Denver, Colorado, where she was responsible for recruiting soldiers in the Boulder area. In 2014, Marshall was reassigned to the 1st Theater Sustainment Command at Fort Bragg, North Carolina. In 2015, Marshall left active duty due to a Reduction in Forces (RIF), and received an honorable discharge. She is currently a member of the reserve, and owner of Tashi Hair Boutique and Tashi Health and Body Products.