Brigadier Dan Pienaar linked with Platt's forces under Major-General Mosley Mayne to besiege Amba Alagi. On 20 May, Mayne took the surrender of the Duke of Aosta, at Amba Alagi. Cunningham continued to lead his forces in mopping-up operations against the 40,000 Italian troops in the Galla-Sidamo region. He was appointed a Knight Commander of the Order of the Bath