Mexican Navy From that year until 1939 it existed jointly with the Mexican Army in the organic ministry. Since its declaration of independence from Spain in September 1810, through the mid decades of the 19th century, Mexico found itself in a constant state of war, mostly against Spain which had not recognized its independence. Therefore, its priority was to purchase its first fleet from the U.S. in order to displace the last remaining Spanish forces from its coasts. The Mexican Navy has participated in many naval battles to protect and defend Mexico's interests. Some of the most important battles were: The first
Battle of the Trench (1821) before. Battle of the Trench (1821) The Battle of the Trench () was fought near Tripolitsa in Arcadia in August 1821 during the first year of the Greek War of Independence between the Greek revolutionary forces led by Theodoros Kolokotronis and the Ottoman garrison of Tripolitsa. The battle ended with the complete victory of the Greeks. In August 1821, Greeks began the siege of Tripolitsa. The Ottomans who were besieged in the city attempted several night sallies in order to find supplies. When Theodoros Kolokotronis was called by the besiegers to take over command of the siege, he therefore ordered