The phrase "to fight this battle" means to engage in a struggle or conflict, usually against difficulties or opposition, in order to achieve a desired outcome or resolve a problem. Full definition
Healthy food and exercise can be your greatest medicine, but hidden allergies in food can also be your greatest enemy in fighting the battle for your health. (rejuvmedicalky.com)
Based on that input the best path may be my own site to control content and just fight the battle of getting traffic. (law.stackexchange.com)
He lost a long hard fought battle with cancer. (sibrescue.com)