 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.In 1816, 7 settlers, 4 on the Nepean and 3 at Macquarie's wife's property at Camden, were killed as the Gandangara came out of the hill lands in search of food.