The War Eagle was a sidewheel steamship built in 1854 in Fulton, Ohio, for the Galena & Minnesota Packet Company (which underwent many re-brandings throughout the use of the War Eagle) of Galena, Illinois. The War Eagle primarily sailed the upper Mississippi River; transporting passengers and freight out from Galena, IL. The War Eagle was quite popular in its time, oftentimes transporting famous and important people on excursions on the Mississippi River. During the 1859 season, the War Eagle collided with steamboat Henry Clay on April 9, on May 26 was stranded on a sand bar at Davenport, and on the same day a body was found in the river with a passenger ticket for the War Eagle; despite all of this, the steamship was still held in high-regard. The War Eagle was only a part of the steamboat competition on the Mississippi River, where passengers were able to haggle ticket prices to the point that companies lost money; the problem was so exasperated that the Minnesota Packet Company and its competitor came to an agreement to allow equal representation and equal splitting of profits and business. The War Eagle was struck by a tornado in the June of 1860, doing significant damage to the (gladly insured) vessel.

During the Civil War Era, the War Eagle transported the 1st Minnesota Volunteer Regiment to La Crosse and Prairie du Chien in 1861. The history of the War Eagle during this period becomes vague during this time, and although its name does appear servicing alongside other Union ships, this is likely the War Eagle built in 1858. Thus, the 1854 War Eagle was still in service on the upper Mississippi river. After the Civil War the War Eagle continued business as usual. The steamship sank three times in 1868 but was raised each time and repaired.
On Sunda, May 15, 1870, the War Eagle arrived at La Crosse to offload passengers. The steamship continued to travel north and was loaded with barrels of kerosene lamp oil. One barrel was discovered to be leaking and caught fire as it was being repaired. The cause of the fire is unknown and subject to conflicting accounts. The flaming barrel was tossed into the river, but it smashed into the deck of the barge Webb, causing the barge to also catch fire. Passengers escaped by any means for fear of the fire reaching the stored gunpowder and causing an even greater disaster; fortunately, the vessel sank before this occurred. The flames spread to the nearby railway depot, destroying a large portion of it.

Since the passenger list was lost in the fire, it is difficult to exactly pinpoint lives lost. Numerous court cases were subsequently filed against the Northwestern Union Packet Company for losses by the destruction of the War Eagle. The wreck was stripped of its machinery in July of 1870; it was likely dynamited, with its subsequent remains dragged into deeper water.
Numerous disturbances occurred on the site of the War Eagle shipwreck, such as dredging operations in 1897 and the 1930s, with some of the artifacts thought to be from the War Eagle being pumped out. Extremely low water levels in the 1930s allowed visitors to loot artifacts. In 1962 and 1963 the Winona County Historical Society conducted dives to collect artifacts, and rumors of treasure troves lost within the steamboat incentivized scavenging.

Preservation efforts were taken up in the 1980s, with it being labeled a state burial site. It was first surveyed in 1985 and 1986, but harsh conditions made work unfavorable; further work was postponed in hopes of better technology being able to produce new data. On May 28, 2018, Wisconsin Historical Society maritime archaeologists and Crossmon Consulting LLC partnered to collect side scan sonar data of the shipwreck. This was done to determine the feasibility of using side scan sonar technology in poor quality and hazardous environments. The shipwreck was a prime candidate for a variety of reasons: the location of the site is known and has been source of curiosity and the desire to understand this site’s history; secondly, the site’s location at the confluence of the La Crosse, Black, and Mississippi Rivers provides the perfect conditions to test the usefulness of modern technology in black water (low to no visibility), strong and potentially dangerous current and cross current conditions, and high occurrence of other debris at the bottom of the river that could prove to be a safety threat to divers. The wreck lies in pieces, mostly buried in the mud.