Later in the war, bombing aircraft were specifically designed to carry large loads. Here a mechanic is arming bombs designed for aircraft use in preparation for a night mission. Larger bombs, up to 1,000 kg (2,200 lbs) were also used during the war. (Wikimedia Commons https://commons.wikimedia.org/wiki/File:Arming_149_Squadron_RAF_FE2_France_Jul_1918_IWM_Q_10372.jpg)