Watch Army of One (2020) HD Full Movie Free on SolarMovie. Watch Army of One (2020) online free. Out hiking, Special Forces Brenner Baker stumbles onto a Cartel's compound. Her husband's killed and...Out hiking, Special Forces Brenner Baker stumbles onto a Cartel's compound. Her husband's killed and she's left for dead. The Cartel made two mistakes, killing her husband and leaving her alive. They won't live to make another.