Complex sentence: Liebknecht was released again in October 1918, when Prince Maximilian of Baden granted an amnesty to all political prisoners, on his return to Berlin on 23 October he was escorted to the Soviet embassy by a crowd of workers.
Split into simpler sentences: Liebknecht was released again in October 1918, when Prince Maximilian of Baden granted an amnesty to all political prisoners. Upon his return to Berlin on 23 October he was escorted to the Soviet embassy by a crowd of workers.