Iwas a reservist for many years before becoming a pilot. Served with Int Corps and 21SAS even did a regular attachment but even with the Ryanair shift pattern 5 on 4 off I couldn’t make the training nights/weekends on a regular enough basis to make it work, especially with other family commitments. I am still a regular army reserve officer (RARO) though. In the unlikely circumstance that I am called up I will address the problem with the company then. If you are young and single you might just make it work if you have an understanding C.O. as well as an understanding employer.