 Complete the following phrase:  By mid-February, Java was the only part of the Dutch East Indies holding out. 77th Welsh HAA Rgt had been defending the naval base of Sourabaya against air attack for several weeks. Brigadier H.D.W, Sitwell of 16 AA Bde was promoted to command all British troops on the island, of which his brigade represented the majority. It was not in good shape, the units having arrived piecemeal, some without their equipment: 12 and 15 Btys of 6 HAA Rgt from Sumatra had no guns and were employed as infantry to defend the airfields, with the men of 7835 LAA Bty and two Troops of 8935 LAA Bty also under command with some Bofors guns. 