I was wondering if it is possible to reapply as a RN Officer if you have previously been unsuccessful in the recruitment process? Or is this subject to which stage you have failed? E.g. failed medical vs. failed face-to-face interview.
I hesitate to express opinions on recruitment, simply because my own experiences are now 40 years out of date. @janner is right, your first port of call should be your AFCO.
However, when I went through the process, you could have as many goes as you liked provided that (a) you were still within the age limit; (b) a naval medical officer hadn’t ruled you permanently medically unfit; and (c) AIB hadn’t ruled you out completely.