Tone joined No. 66 Squadron as Flight Commander whilst it was based in Estrees-Blanche near Aire / Liettres France, under the command of GLP Henderson MC, and heavily engaged in the battle of Ypres flying Sopwith Pups [REFS: 66 FS biog; CROSS & COCKADE INT.1995;26(4):191-196; service record card:AIR/76/29]
