During the Great North War, Maltravers did not serve due to being a Quacker Pacifist and a conscientious objector. During that time, however, he focused more on his medical practice to help those in need. After the war, he would return to his Bookkeeping, and later joined the NUP. Alongside that, Maltravers began to write for the local newspapers political collum, resulting in him gaining some fame in Sankey.