sentences:  Despite all of the political setbacks, the Adelaide Rifles had soon grown to 21 companies, and on 4 July 1877 a second battalion was formed.The second battalion comprised the companies from Mount Gambier, Unley, and Port Pirie together with the Duke of Edinburgh's Own of Prince Alfred Rifle Volunteers.Training intensified briefly for the duration of the Russo-Turkish War, and then resumed at normal levels, with the 2nd Battalion being amalgamated with the 1st Battalion.