They were fighting for freedom everywhere. But the first battle they had to win was at home.

Grace Steele and Eliza Jones make history when they join the Women's Army Auxiliary Corps, and form the 6888th Central Postal Directory Battalion. Not only are they among the first class of female officers the army has ever seen, they are also the first Black women allowed to serve.

Everyone is determined to see this experiment fail and learning to navigate their way through the segregated army is tougher than boot camp. Grace and Eliza may be from completely different backgrounds but they both recognise that to succeed they must be more perfect than everyone else: there is no room for error.

They know that what lies overseas in England and France could cause them great personal cost, but nothing is going to stop these courageous women from playing their parts for the country they love.