19th [December] Heavy bombardment at 4.30am by the Germans on the front of 6th Division holding the Potisje line – accompanied by gas attack: the bombardment lasted for two hours at the end of which some Germans were said to have been seen getting out of their trenches – but immediately went back again – whether the Germans intended to attack with the infantry is not known, but I think it was probable, & finding that our men in the trenches had not suffered from the gas, they either could not get their men to advance, or cancelled the order. Our men put on their gas helmets and did not suffer from the gas. About nine enemy aeroplanes were up before it was light, & must have seen our