Egypt, the harassment by Gazelle Force and the activities of Mission 101 in Ethiopia, led to the Italians withdrawing their northern flank to Keru and Wachai and then on 18 January to retreat hurriedly from Kassala and Tessenei, the triangle of Keru, Biscia and Aicota. Wavell had ordered Platt to advance the offensive from March to 9 February and then to 19 January, when it seemed that Italian morale was crumbling. The withdrawal led Wavell to order a pursuit and the troops arriving at Port Sudan (Briggs Force) to attack at Karora and advance parallel to the coast, to meet the forces coming from the west. Battle of Agordat, Barentu Two roads joined at Agordat and went through to Keren, the only route to Asmara. The 4th Indian Division was sent along the road to Sabderat and Wachai, thence as far towards Keru as supplies allowed, with the Matilda Infantry tanks of B Squadron, 4th RTR to join from Egypt. The 5th Indian Division was to capture Aicota, ready to move east to Barentu or north-east to Biscia. Apart from air attacks the pursuit was not opposed until Keru Gorge, held by a rearguard of the 41st Colonial Brigade. The brigade retreated on the night of leaving General Ugo Fongoli, his staff and behind as prisoners. On 28 January, the 3/14th Punjab Regiment made a flanking move to Mt Cochen to the south and on 30 January, five Italian colonial battalions counter-attacked with mountain artillery support, forcing back the Indians. On the morning of 31 January the Indians attacked again and advanced towards the main road. The 5th Indian Brigade on the plain attacked with the Matildas, overran the Italians, knocked out several Italian tanks and cut the road to Keren. The 2nd Colonial Division retreated having lost 1,500 to 2,000 infantry, and several medium and light tanks. Barentu, held by nine battalions of the 2nd Colonial Division (about and about thirty-six dug in M11/39 tanks and armoured cars was attacked by 10th Indian Infantry Brigade from the north against a determined Italian defence, as the 29th Indian Infantry Brigade advanced from the west, slowed by demolitions and rearguards. On the night of 31 January/1 February, the Italians retreated along a track towards Tole and Arresa and on 8 February, abandoned vehicles were found by the pursuers. The Italians had taken to the hills, leaving the Tessenei–Agordat road open. Battle