He played his first match on 14February 1920 against Ireland and his last match on 9 April 1921 also against Ireland. At club level, he played for several clubs with Rotherham County being his most successful. He made 49 war-time guest appearances for Leeds City, scoring 6 goals in total. On 17 October 1919, an auction was held at the Metropole Hotel in Leeds, where the playingstaff of Leeds was auctioned off along with other assets of the club. The 16 members of the playing squad were bought by 9 different clubs for a total of £9,250. Millership was bought by Rotherham County for £1,000,which was the second highest bid for a player. Billy McLeod was bought for £1,250 by Notts County.