Upon completion of my advanced training in the army, I was forced to get my "blood wings" before the drill instructor would sign my release papers. This consisted of him placing me up against a door, taking the backings of my wings(think of hat pins) and shoving his open palm into my chest as fast and hard as he could. He hit me so hard he shoved the service robins below my wings through those backings, so I got two sets of bloody holes.
While attached to a special operations unit, all of the soldiers go through what is called green platoon before they join the rest of the unit. It is essentially basic training on steroids. After graduation, when the soldier joined the rest of the unit the established troops would often take the new graduates and hog tie them. After laying them down on the floor the rest of your platoon would come through and knee strike the legs, tie them to a chair and run them into the showers. Often times when they were done with that, they would place a pocket knife on the floor next to you and you had to cut yourself free.
One of the platoon sergeants would occasionally bet one of the new guys $100.00 that if they let him put them in a choke hold for 10 seconds he would led them go, and they would then have 10 seconds once he released them to get over to the 100 dollar bill sitting on a table. If they made it they got to keep the 100 dollars. Never saw anyone make it. I was surprised to see how many people actually try it.