"While the buildup of men and machines continued, BF.I was taking an active part in the conflict. Observer/gunners were readily available, these were men who had never flown before but were well experienced in guerrilla warfare, some being veterans of the 1916 Rising. Russell was partnered by a former member of Collins' elite Active Service Unit, when he took off on the first sortie to support ground troops in Wicklow. The aircraft was armed solely with a standard infantry Lewis gun with which the observer engaged the Irregulars, firing it from his hip while dangerously balanced in his cockpit. The lack of armament on this and a second aircraft obtained from the RAF, perhaps underlined the original peaceful plans for the Air Service: its founders had refused guns, ammunition and bombs, which somewhat puzzled the donors. However, after the first sortie, warlike stores were accepted, once it became apparent that a real war was brewing up."