The stoploss has nothing to do with IRR time its totally different. The stoploss is based on a time of war and the soldiers ETS date. If you are in country and you are due to ETS you will probably be involuntarily extended to finish the tour. If your unit is about to deploy they will set a specific time before the doployment for a stoploss. If your ETS is after that set date and the unit hasn't filled the manning needed for the mobilization then stoploss could prevent you from ETS and you would have to deploy. To some that sounds like BS but it is in the contract that every soldier signs, and should review when they enlist. I am looking at the contract right now and i will tell you exactly where it is. The form is DD FORM 4/1. It is in section C part 10 in many of the subparagraphs (a,b,c etc.). This movie should be called deserter instead of stoploss. When people sign any contract they need to READ THE CONTRACT and find out everything included. This is not even fine print. It reads "In a time of war, my enlistmenty may be extended without my consent for the duration of the war and for six months after its end". I dont know of a more straight forward way of saying it than that. Suck it up, serve you country, and drive on, because you did raise your right hand and swore to do just that.