To support Eighth Army's attack on Wadi Akarit on 6 April, First Army attacked towards Kairouan to cut off the enemy retreat. The approach roads for 128th Infantry Brigade Group were little more than 150 miles of sand tracks, and had to be improved by 586th Field Company, assisted by US engineers from II Corps. On 8 April, 128th Bde captured Pichon in an operation requiring two crossings of the bed of the Oued Marguellil and considerable mine clearance. The Tunisian campaign ended on 12 May with the surrender of "Armeegruppe Afrika".