After receiving my grandads records from RAF Northolt for his time served in the Polish 2nd Corps under the British Army. He states: 'voluntarily enlisted in the Polish forces under British command with effect from 11.08.1944 and was posted to 21 infantry Regiment, 2 Polish Corps Troops Base. served in Italy in the Battle of Ancona, rear guard of 8 British Army, Action in Northern Apennines and Battle for Bologna/ Lombardy Plain.' How come I can't find any information on the 21st infantry regiment on the internet? Apart from that of the USA army. Can anyone shed any light on this?