“九·一八”事变后,日寇加紧了进犯华北的步伐。一九三三年五月,爱国将领冯玉祥、吉鸿昌、方振武等人,以国民军旧部为基础,在张家口组织民众抗日同盟军,并通电全国,实行联合抗击日寇的进攻。同盟军浴血奋战,先后收复宝昌、沽源、多伦等地,一时军民抗日信 After the September 18 Incident, the Japanese aggressor stepped up the pace of invasion of North China. In May 1933, patriotic generals Feng Yuxiang, Ji Hongchang, Fang Zhenwu and others, based on the old ministry of the National Army, organized the popular anti-Japanese allied army in Zhangjiakou and electrified the whole country to implement the joint offensive against the Japanese invaders. The Allied armies fought bloody battles and successively recovered Baochang, Guyuan, Duolun and other places,