Complex sentence: Although the Rajputs were held up around Kondan in December 1942, the advance slowly continued towards Donbaik, where the brigade's attack ground to a halt and they were subsequently relieved by the 55th Indian Infantry Brigade in early February 1943.
Split into simpler sentences: Although the Rajputs were held up around Kondan in December 1942, the advance slowly continued towards Donbaik. It was there, where the brigade's attack ground to a halt and they were subsequently relieved by the 55th Indian Infantry Brigade in early February 1943.