for sacrifice to the sun. Combat orders were given by kings (or Lords) using drums or blowing into a sea snail shell that gave off a sound like a horn. Giving out signals using coats of arms was very common. For combat outside of cities, they would organize several groups, only one of which would be involved in action, while the others remained on the alert. When attacking enemy cities, they usually divided their forces into three equal-sized wings, which simultaneously assaulted different parts of the defences – this enabled the leaders to determine which division of warriors had distinguished themselves the most in combat. Military in the Spanish Colonial Era During the 18th century the Spanish colonial forces in the greater Mexico region consisted of regular "Peninsular" regiments sent from Spain itself, augmented by locally recruited provincial and urban militia units of infantry, cavalry and artillery. A few regular infantry and dragoon regiments (e.g. the Regimiento de Mexico) were recruited within Mexico and permanently stationed there. Mounted units of soldados de cuera (so called from the leather protective clothing that they wore) patrolled frontier and desert regions. Independence In the early morning of 16 September 1810, the Army of Miguel Hidalgo y Costilla initiated the independence movement. Hidalgo was followed by his loyal companions, among them Mariano Abasolo, and a small army equipped with swords, spears, slingshots and sticks. Captain General Ignacio Allende was the military brains of the insurgent army in the first phase of the War of Independence and secured several victories over the Spanish Royal Army. Their troops were about 5,000 strong and were later joined by squadrons of the Queen's Regiment where its members in turn contributed infantry battalions and cavalry squadrons to the insurrection cause. The Spaniards saw that it was important to defend the Alhóndiga de Granaditas public granary in Guanajuato, which maintained the flow of water, weapons, food and ammunition to the Spanish Royal Army. The insurgents entered Guanajuato and proceeded to lay siege to the Alhóndiga. The insurgents suffered heavy casualties until Juan Jose de los Reyes, the Pípila, fitted a slab of rock on his back to protect himself from enemy fire and crawled to the large wooden door of the Alhóndiga with a torch in hand to set it on fire. With this stunt, the insurgents managed to bring down the door and enter the building and overrun it.