 Other technology, such as bayonet rings, modern meteorology, satellite cartography, and canister shot, further increase the rebels advantage .The Battle of Yortown, in which the massed Guard reinforcements charged a fortified Angel's army position, quite effectively demonstrated this through the slaughter of the aggressors.Sean's lack of boldness in the counter-stroke followup allowed the surviving Guard commander, named Ortak, to retreat to Erastor, a well-fortified position placed like a choke-point between Malagor and the Temple.