In March 1814, some Aborigines were violently driven away after they complained of not being paid their wages for working for white settlers. In May an Aboriginal woman and three children were killed during skirmishes near the Milehouse and Butcher farms, and in retaliation, 3 Europeans were killed. Though this was on traditional Darawal lands, these fatal incidents, like a further one at Bringelly in June, were attributed to the Gandangara coming over from the west. The Gandangara joined forces with the Thurrawal/Darawal, who had linked up with remnants of the Dharug, in order to participate in the frontier war, also raiding cornfields. The decline in Dharug population had opened up parts of their territory to use by neighbouring tribal groups, which also fought among themselves. Aside from considerations of defending their territories against the European colonial expansion, a period of severe drought may have influenced this turn in strategy. Gandangara raiding bands, harvesting crops on settlers' properties, also attacked the Thurrawal and Dharug, so that the latter two began to collaborate against them, by helping the British authorities, and seeking refuge in squatters' settlements. Like other tribes, the Gandangara had developed strategies to cope with the superior firepower of musketry, teasing troops to fire at them, in the knowledge that, once fired, some time was required to reload them, during which the aborigines could launch spearing attacks.