and organized at West Point, New York, as Captain Henry Burbeck's Company of Artillery; and Captain James Barker's Company, 2nd Regiment of Artillery, constituted on January 11, 1812. Murray's Company and Barker's Company are the antecedent of today's 1-4 and 3-4 ADA, respectively. Only one of these battalions is currently active: 3-4 ADA. The credit for the Louisiana (1815) Campaign awarded to the 4th Air Defense Artillery is shared credit earned by Captain Thomas Murray's Company, which was at Fort St. Philip, a fort below New Orleans about thirty miles from the mouth of the Mississippi River, when it was subjected to a prolonged bombardment by British warships on January 5, 1815, and Captain Charles Wollstonecraft's Companies. Wollstonecraft's Company is the predecessor of a battalion that is no longer in the 4th Air Defense Artillery. Wollstonecraft's Company ultimately became today's 1-5 FA, the oldest unit in the Regular Army. Its lineage and participation in the War of 1812 will be discussed in the section on the 5th Field Artillery. The fact that a regiment can retain the battle honors earned by a subordinate unit that no longer serves in the regiment is due to a quirk in the rules for assigning campaign credits prior to 1898 that applied before the implementation of the Combat Arms Regimental System in 1957. The passage and display of regimental honors was governed by AR 870-5, which states that campaign participation credit that accrues to a color-bearing organization includes "credit earned by two or more of its guidon-bearing elements before 1898." Thus, the credit earned by Murray's and Wollstonecraft's Companies passed to the 4th Air Defense Artillery as a shared honor for all of its elements. AR 870-5 also states that "the honors of a color-bearing organization will not be changed by the removal of its organic elements." Therefore, the shared credit remains with the 4th Air Defense Artillery, even though one of the units that earned that credit has been removed from the regiment. 3-4 ADA Campaigns (earned): Canada 3-4 ADA traces its history back to a company in the 2nd Regiment of Artillery constituted on January 11, 1812, and organized in May as Captain James N. Barker's Company, 2nd Regiment of Artillery. Barker's Company was consolidated in late 1813 with Captain Spotswood Henry's Company, 2nd Regiment of Artillery (organized in 1812), with the consolidated unit designated as Capt. James. N. Barker's Company, 2nd