What are examples of military incidents, accidents, maneuvers, exercises etc. that cost the lives of an unusually high number of soldiers (airmen, sailors, marines) or civilians during peacetime? “Peacetime” in this context may also refer to an incident during times of war, but removed from an actual theater of war (i. e. were the fighting takes place).
Since I assume that losses of ships and aircrafts will rank high on that list, let’s differentiate:
Technically, they were on their way to start a war, but the term “kamikaze” (divine wind) originally refers to two attempts by the Mongols to conquer Japan. In both cases, the Mongol ships were sunken by massive typhoons, and Japan was spared.
The second fleet (according to the Wikipedia) had 140,000 men.
After the Civil War the steamboat Sultana was estimated to have around 2,100 recently released Union prisoners of war on board when its boilers exploded on April 27 1865, killing around 1,800.
I’m not sure whether the Salang tunnel explosion meets your criteria (of being outside a theatre of war). It was in any event an accident and not an act of war, and resulted in the deaths of thousands of Soviet soldiers.
What I had mind were incidents like this one: 80 soldiers (mostly young recruits) and one civilian drowned on March 31st, 1925 during a Reichswehr exercise when a ferry boat capsized on the river Weser near Veltheim, Westphalia (in northwestern Germany).
There is a small monument and a plaque in honor of the victims:
Arrow Air Flight 1285 was a chartered DC-8 returning the 3rd/502 Infantry battalion of the 101st Airborne to Ft Campbell in December 1985 from UN Sinai duty. It crashed on takeoff from Gander in Canada. 248 soldiers and 8 crew dead.
I was in the 2nd/502 at the time and had the unpleasant task of carrying the casket of the first soldier buried. It was an icy cemetery in West Virginia and his mother did not stop screaming.
I was going to post the same incident, till I saw your post.
My brother was on that plane.
My deepest regards to you for doing one of the more emotionally draining duties in the military.
While it didn’t have nearly the number of casualties of some of these incidents the Green Ramp Disaster was pretty horrific. At Pope Air Force Base a crashing F-16 covered waiting 82nd Airborne paratroopers in burning jet fuel and debris. 24 died and 80 injured. Many of the survivors were horribly burned.
The [Quintinshill rail disaster - Wikipedia](Quintinshill rail disaster) killed more than 200 soldiers in the Scottish borders. The total number was never 100% confirmed because a) big fire, b) the regimental paperwork was on the troop train that burned.