<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo I-21st Queens Own Dorset Yeomanry yasungulwa ngoSepthemba 1914.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi The 21st Queens Own Dorset Yeomanry was formed in September 1914, they converted to a cyclist unit in July 1916. 