A warrant officer is an officer who can and does command, carry out military justice actions and sits on both selection and promotion boards.
Within the British armed services, both Sir Fitzroy Maclean and Enoch Powell are examples of, rare, rapid career progression with the British army, both rising from the rank of private to brigadier during World War II.
In the US military such advancement is not uncommon, all five services maintaining programs that select promising enlisted men and women for the commissioned ranks.
Notes on comparison: Addendum: In the US Army (but not the USMC) the term "trooper/(troop)" may be used informally for lower enlisted in cavalry, scout, airborne, air assault, Ranger, and Special Forces units, along with the occasional use for any soldier, particularly dismounted infantry.
The specific definition of "troop" is a company-sized unit of cavalry, organizationally equivalent to "battery" in artillery units.